1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2
 
2
 
 
 
 
2
 
2
 
2
2
2
 
 
 
 
1
 
 
 
 
 
 
2
 
 
 
2
 
 
 
2
 
2
 
 
 
 
 
 
 
1
2
 
 
 
 
 
2
 
 
2
 
 
2
2
 
1
 
 
 
2
 
 
1
1
1
 
1
1
 
 
1
1
 
1
 
 
1
 
2
 
 
 
 
 
1
 
1
 
1
 
 
 
 
1
2
2
3
3
3
3
1
 
 
3
3
 
 
 
 
3
 
 
 
1
3
1
 
 
 
1
1
 
 
 
 
 
 
 
1
 
1
1
1
 
1
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
 
1
 
 
6
6
 
1
 
2
 
1
 
2
 
 
 
 
1
1
 
1
 
 
 
 
1
 
 
 
 
 
 
1
 
 
1
1
 
 
1
1
 
1
1
1
1
1
1
1
 
1
1
 
1
 
 
 
 
/*
example.js
 
quickstart example
 
instruction
    1. save this script as example.js
    2. run the shell command:
        $ npm install npmtest-ogr2ogr && PORT=8081 node example.js
    3. play with the browser-demo on http://127.0.0.1:8081
*/
 
 
 
/* istanbul instrument in package npmtest_ogr2ogr */
/*jslint
    bitwise: true,
    browser: true,
    maxerr: 8,
    maxlen: 96,
    node: true,
    nomen: true,
    regexp: true,
    stupid: true
*/
(function () {
    'use strict';
    var local;
 
 
 
    // run shared js-env code - pre-init
    (function () {
        // init local
        local = {};
        // init modeJs
        local.modeJs = (function () {
            try {
                return typeof navigator.userAgent === 'string' &&
                    typeof document.querySelector('body') === 'object' &&
                    typeof XMLHttpRequest.prototype.open === 'function' &&
                    'browser';
            } catch (errorCaughtBrowser) {
                return module.exports &&
                    typeof process.versions.node === 'string' &&
                    typeof require('http').createServer === 'function' &&
                    'node';
            }
        }());
        // init global
        local.global = local.modeJs === 'browser'
            ? window
            : global;
        // init utility2_rollup
        local = local.global.utility2_rollup || (local.modeJs === 'browser'
            ? local.global.utility2_npmtest_ogr2ogr
            : global.utility2_moduleExports);
        // export local
        local.global.local = local;
    }());
    switch (local.modeJs) {
 
 
 
    // post-init
    // run browser js-env code - post-init
    /* istanbul ignore next */
    case 'browser':
        local.testRunBrowser = function (event) {
            Eif (!event || (event &&
                    event.currentTarget &&
                    event.currentTarget.className &&
                    event.currentTarget.className.includes &&
                    event.currentTarget.className.includes('onreset'))) {
                // reset output
                Array.from(
                    document.querySelectorAll('body > .resettable')
                ).forEach(function (element) {
                    switch (element.tagName) {
                    case 'INPUT':
                    case 'TEXTAREA':
                        element.value = '';
                        break;
                    default:
                        element.textContent = '';
                    }
                });
            }
            switch (event && event.currentTarget && event.currentTarget.id) {
            case 'testRunButton1':
                // show tests
                Eif (document.querySelector('#testReportDiv1').style.display === 'none') {
                    document.querySelector('#testReportDiv1').style.display = 'block';
                    document.querySelector('#testRunButton1').textContent =
                        'hide internal test';
                    local.modeTest = true;
                    local.testRunDefault(local);
                // hide tests
                } else {
                    document.querySelector('#testReportDiv1').style.display = 'none';
                    document.querySelector('#testRunButton1').textContent = 'run internal test';
                }
                break;
            // custom-case
            default:
                break;
            }
            Iif (document.querySelector('#inputTextareaEval1') && (!event || (event &&
                    event.currentTarget &&
                    event.currentTarget.className &&
                    event.currentTarget.className.includes &&
                    event.currentTarget.className.includes('oneval')))) {
                // try to eval input-code
                try {
                    /*jslint evil: true*/
                    eval(document.querySelector('#inputTextareaEval1').value);
                } catch (errorCaught) {
                    console.error(errorCaught);
                }
            }
        };
        // log stderr and stdout to #outputTextareaStdout1
        ['error', 'log'].forEach(function (key) {
            console[key + '_original'] = console[key];
            console[key] = function () {
                var element;
                console[key + '_original'].apply(console, arguments);
                element = document.querySelector('#outputTextareaStdout1');
                Iif (!element) {
                    return;
                }
                // append text to #outputTextareaStdout1
                element.value += Array.from(arguments).map(function (arg) {
                    return typeof arg === 'string'
                        ? arg
                        : JSON.stringify(arg, null, 4);
                }).join(' ') + '\n';
                // scroll textarea to bottom
                element.scrollTop = element.scrollHeight;
            };
        });
        // init event-handling
        ['change', 'click', 'keyup'].forEach(function (event) {
            Array.from(document.querySelectorAll('.on' + event)).forEach(function (element) {
                element.addEventListener(event, local.testRunBrowser);
            });
        });
        // run tests
        local.testRunBrowser();
        break;
 
 
 
    // run node js-env code - post-init
    /* istanbul ignore next */
    case 'node':
        // export local
        module.exports = local;
        // require modules
        local.fs = require('fs');
        local.http = require('http');
        local.url = require('url');
        // init assets
        local.assetsDict = local.assetsDict || {};
        /* jslint-ignore-begin */
        local.assetsDict['/assets.index.template.html'] = '\
<!doctype html>\n\
<html lang="en">\n\
<head>\n\
<meta charset="UTF-8">\n\
<meta name="viewport" content="width=device-width, initial-scale=1">\n\
<title>{{env.npm_package_name}} (v{{env.npm_package_version}})</title>\n\
<style>\n\
/*csslint\n\
    box-sizing: false,\n\
    universal-selector: false\n\
*/\n\
* {\n\
    box-sizing: border-box;\n\
}\n\
body {\n\
    background: #dde;\n\
    font-family: Arial, Helvetica, sans-serif;\n\
    margin: 2rem;\n\
}\n\
body > * {\n\
    margin-bottom: 1rem;\n\
}\n\
.utility2FooterDiv {\n\
    margin-top: 20px;\n\
    text-align: center;\n\
}\n\
</style>\n\
<style>\n\
/*csslint\n\
*/\n\
textarea {\n\
    font-family: monospace;\n\
    height: 10rem;\n\
    width: 100%;\n\
}\n\
textarea[readonly] {\n\
    background: #ddd;\n\
}\n\
</style>\n\
</head>\n\
<body>\n\
<!-- utility2-comment\n\
<div id="ajaxProgressDiv1" style="background: #d00; height: 2px; left: 0; margin: 0; padding: 0; position: fixed; top: 0; transition: background 0.5s, width 1.5s; width: 25%;"></div>\n\
utility2-comment -->\n\
<h1>\n\
<!-- utility2-comment\n\
    <a\n\
        {{#if env.npm_package_homepage}}\n\
        href="{{env.npm_package_homepage}}"\n\
        {{/if env.npm_package_homepage}}\n\
        target="_blank"\n\
    >\n\
utility2-comment -->\n\
        {{env.npm_package_name}} (v{{env.npm_package_version}})\n\
<!-- utility2-comment\n\
    </a>\n\
utility2-comment -->\n\
</h1>\n\
<h3>{{env.npm_package_description}}</h3>\n\
<!-- utility2-comment\n\
<h4><a download href="assets.app.js">download standalone app</a></h4>\n\
<button class="onclick onreset" id="testRunButton1">run internal test</button><br>\n\
<div id="testReportDiv1" style="display: none;"></div>\n\
utility2-comment -->\n\
\n\
\n\
\n\
<label>stderr and stdout</label>\n\
<textarea class="resettable" id="outputTextareaStdout1" readonly></textarea>\n\
<!-- utility2-comment\n\
{{#if isRollup}}\n\
<script src="assets.app.js"></script>\n\
{{#unless isRollup}}\n\
utility2-comment -->\n\
<script src="assets.utility2.rollup.js"></script>\n\
<script src="jsonp.utility2._stateInit?callback=window.utility2._stateInit"></script>\n\
<script src="assets.npmtest_ogr2ogr.rollup.js"></script>\n\
<script src="assets.example.js"></script>\n\
<script src="assets.test.js"></script>\n\
<!-- utility2-comment\n\
{{/if isRollup}}\n\
utility2-comment -->\n\
<div class="utility2FooterDiv">\n\
    [ this app was created with\n\
    <a href="https://github.com/kaizhu256/node-utility2" target="_blank">utility2</a>\n\
    ]\n\
</div>\n\
</body>\n\
</html>\n\
';
        /* jslint-ignore-end */
        Iif (local.templateRender) {
            local.assetsDict['/'] = local.templateRender(
                local.assetsDict['/assets.index.template.html'],
                {
                    env: local.objectSetDefault(local.env, {
                        npm_package_description: 'the greatest app in the world!',
                        npm_package_name: 'my-app',
                        npm_package_nameAlias: 'my_app',
                        npm_package_version: '0.0.1'
                    })
                }
            );
        } else {
            local.assetsDict['/'] = local.assetsDict['/assets.index.template.html']
                .replace((/\{\{env\.(\w+?)\}\}/g), function (match0, match1) {
                    // jslint-hack
                    String(match0);
                    switch (match1) {
                    case 'npm_package_description':
                        return 'the greatest app in the world!';
                    case 'npm_package_name':
                        return 'my-app';
                    case 'npm_package_nameAlias':
                        return 'my_app';
                    case 'npm_package_version':
                        return '0.0.1';
                    }
                });
        }
        // run the cli
        Eif (local.global.utility2_rollup || module !== require.main) {
            break;
        }
        local.assetsDict['/assets.example.js'] =
            local.assetsDict['/assets.example.js'] ||
            local.fs.readFileSync(__filename, 'utf8');
        // bug-workaround - long $npm_package_buildCustomOrg
        /* jslint-ignore-begin */
        local.assetsDict['/assets.npmtest_ogr2ogr.rollup.js'] =
            local.assetsDict['/assets.npmtest_ogr2ogr.rollup.js'] ||
            local.fs.readFileSync(
                local.npmtest_ogr2ogr.__dirname + '/lib.npmtest_ogr2ogr.js',
                'utf8'
            ).replace((/^#!/), '//');
        /* jslint-ignore-end */
        local.assetsDict['/favicon.ico'] = local.assetsDict['/favicon.ico'] || '';
        // if $npm_config_timeout_exit exists,
        // then exit this process after $npm_config_timeout_exit ms
        if (Number(process.env.npm_config_timeout_exit)) {
            setTimeout(process.exit, Number(process.env.npm_config_timeout_exit));
        }
        // start server
        if (local.global.utility2_serverHttp1) {
            break;
        }
        process.env.PORT = process.env.PORT || '8081';
        console.error('server starting on port ' + process.env.PORT);
        local.http.createServer(function (request, response) {
            request.urlParsed = local.url.parse(request.url);
            if (local.assetsDict[request.urlParsed.pathname] !== undefined) {
                response.end(local.assetsDict[request.urlParsed.pathname]);
                return;
            }
            response.statusCode = 404;
            response.end();
        }).listen(process.env.PORT);
        break;
    }
}());
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
 
 
 
 
 
 
 
 
 
 
 
2
 
2
 
 
 
 
2
 
2
 
2
2
2
 
 
 
 
1
 
 
 
 
 
 
2
 
 
 
2
 
2
 
2
1
 
1
1
1
 
 
 
 
 
/* istanbul instrument in package npmtest_ogr2ogr */
/*jslint
    bitwise: true,
    browser: true,
    maxerr: 8,
    maxlen: 96,
    node: true,
    nomen: true,
    regexp: true,
    stupid: true
*/
(function () {
    'use strict';
    var local;
 
 
 
    // run shared js-env code - pre-init
    (function () {
        // init local
        local = {};
        // init modeJs
        local.modeJs = (function () {
            try {
                return typeof navigator.userAgent === 'string' &&
                    typeof document.querySelector('body') === 'object' &&
                    typeof XMLHttpRequest.prototype.open === 'function' &&
                    'browser';
            } catch (errorCaughtBrowser) {
                return module.exports &&
                    typeof process.versions.node === 'string' &&
                    typeof require('http').createServer === 'function' &&
                    'node';
            }
        }());
        // init global
        local.global = local.modeJs === 'browser'
            ? window
            : global;
        // init utility2_rollup
        local = local.global.utility2_rollup || local;
        // init lib
        local.local = local.npmtest_ogr2ogr = local;
        // init exports
        if (local.modeJs === 'browser') {
            local.global.utility2_npmtest_ogr2ogr = local;
        } else {
            module.exports = local;
            module.exports.__dirname = __dirname;
            module.exports.module = module;
        }
    }());
}());
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
 
 
 
 
 
 
 
 
 
 
 
2
 
2
 
 
 
 
2
 
2
 
2
2
2
 
 
 
 
1
 
 
 
 
 
 
2
 
 
2
 
 
1
 
 
 
1
 
 
1
 
1
 
 
2
 
 
 
 
 
2
2
 
2
 
 
 
 
 
1
 
 
 
 
 
1
 
 
 
 
 
2
2
 
2
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
1
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
1
1
 
 
1
 
 
 
 
 
 
1
1
1
1
1
1
 
 
1
 
 
 
 
2
2
 
 
1
 
 
 
 
 
 
2
2
 
 
1
 
 
 
 
 
 
2
2
 
 
1
 
 
 
 
 
 
2
2
 
 
1
 
 
 
 
 
 
1
1
 
 
 
1
1
 
 
 
 
/* istanbul instrument in package npmtest_ogr2ogr */
/*jslint
    bitwise: true,
    browser: true,
    maxerr: 8,
    maxlen: 96,
    node: true,
    nomen: true,
    regexp: true,
    stupid: true
*/
(function () {
    'use strict';
    var local;
 
 
 
    // run shared js-env code - pre-init
    (function () {
        // init local
        local = {};
        // init modeJs
        local.modeJs = (function () {
            try {
                return typeof navigator.userAgent === 'string' &&
                    typeof document.querySelector('body') === 'object' &&
                    typeof XMLHttpRequest.prototype.open === 'function' &&
                    'browser';
            } catch (errorCaughtBrowser) {
                return module.exports &&
                    typeof process.versions.node === 'string' &&
                    typeof require('http').createServer === 'function' &&
                    'node';
            }
        }());
        // init global
        local.global = local.modeJs === 'browser'
            ? window
            : global;
        switch (local.modeJs) {
        // re-init local from window.local
        case 'browser':
            local = local.global.utility2.objectSetDefault(
                local.global.utility2_rollup || local.global.local,
                local.global.utility2
            );
            break;
        // re-init local from example.js
        case 'node':
            local = (local.global.utility2_rollup || require('utility2'))
                .requireExampleJsFromReadme();
            break;
        }
        // export local
        local.global.local = local;
    }());
 
 
 
    // run shared js-env code - function
    (function () {
        return;
    }());
    switch (local.modeJs) {
 
 
 
    // run browser js-env code - function
    case 'browser':
        break;
 
 
 
    // run node js-env code - function
    case 'node':
        break;
    }
 
 
 
    // run shared js-env code - post-init
    (function () {
        return;
    }());
    switch (local.modeJs) {
 
 
 
    // run browser js-env code - post-init
    case 'browser':
        local.testCase_browser_nullCase = local.testCase_browser_nullCase || function (
            options,
            onError
        ) {
        /*
         * this function will test browsers's null-case handling-behavior-behavior
         */
            onError(null, options);
        };
 
        // run tests
        local.nop(local.modeTest &&
            document.querySelector('#testRunButton1') &&
            document.querySelector('#testRunButton1').click());
        break;
 
 
 
    // run node js-env code - post-init
    /* istanbul ignore next */
    case 'node':
        local.testCase_buildApidoc_default = local.testCase_buildApidoc_default || function (
            options,
            onError
        ) {
        /*
         * this function will test buildApidoc's default handling-behavior-behavior
         */
            options = { modulePathList: module.paths };
            local.buildApidoc(options, onError);
        };
 
        local.testCase_buildApp_default = local.testCase_buildApp_default || function (
            options,
            onError
        ) {
        /*
         * this function will test buildApp's default handling-behavior-behavior
         */
            local.testCase_buildReadme_default(options, local.onErrorThrow);
            local.testCase_buildLib_default(options, local.onErrorThrow);
            local.testCase_buildTest_default(options, local.onErrorThrow);
            local.testCase_buildCustomOrg_default(options, local.onErrorThrow);
            options = [];
            local.buildApp(options, onError);
        };
 
        local.testCase_buildCustomOrg_default = local.testCase_buildCustomOrg_default ||
            function (options, onError) {
            /*
             * this function will test buildCustomOrg's default handling-behavior
             */
                options = {};
                local.buildCustomOrg(options, onError);
            };
 
        local.testCase_buildLib_default = local.testCase_buildLib_default || function (
            options,
            onError
        ) {
        /*
         * this function will test buildLib's default handling-behavior
         */
            options = {};
            local.buildLib(options, onError);
        };
 
        local.testCase_buildReadme_default = local.testCase_buildReadme_default || function (
            options,
            onError
        ) {
        /*
         * this function will test buildReadme's default handling-behavior-behavior
         */
            options = {};
            local.buildReadme(options, onError);
        };
 
        local.testCase_buildTest_default = local.testCase_buildTest_default || function (
            options,
            onError
        ) {
        /*
         * this function will test buildTest's default handling-behavior
         */
            options = {};
            local.buildTest(options, onError);
        };
 
        local.testCase_webpage_default = local.testCase_webpage_default || function (
            options,
            onError
        ) {
        /*
         * this function will test webpage's default handling-behavior
         */
            options = { modeCoverageMerge: true, url: local.serverLocalHost + '?modeTest=1' };
            local.browserTest(options, onError);
        };
 
        // run test-server
        local.testRunServer(local);
        break;
    }
}());
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
1
1
1
1
1
1
1
 
1
 
 
 
 
1
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
 
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
1
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
var path = require('path')
var cp = require('child_process')
var zip = require('./lib/zip')
var csv = require('./lib/csv')
var util = require('./lib/util')
var stream = require('stream')
var EE = require('events').EventEmitter
 
function logCommand(args) {
  // console.error.apply(null, ['ogr2ogr'].concat(args))
  return args
}
 
module.exports = Ogr2ogr
 
function Ogr2ogr(mixed, fmt) {
  if (!(this instanceof Ogr2ogr)) return new Ogr2ogr(mixed, fmt)
 
  if (!mixed) {
    throw new Error('A file path, stream, or GeoJSON object is required')
  }
 
  if (mixed instanceof stream) {
    var driver = util.getDriver(fmt || path.extname(mixed.path).replace('.',''))
    if (!driver) throw new Error('Streams require a valid input format')
    this._inStream = mixed
    this._inDriver = driver
  }
  else if (typeof mixed == 'object') {
    this._inGeoJSON = mixed
  }
  else {
    this._inPath = mixed
  }
 
  this._driver = {}
  this._args = []
  this._timeout = 15000
  this._format = 'GeoJSON'
  this._skipfailures = false
 
  this._testClean = function() {} // testing
}
 
Ogr2ogr.prototype = Object.create(EE.prototype)
 
Ogr2ogr.prototype.format = function(fmt) {
  var driver = util.getDriver(fmt)
  this._driver = driver
  this._format = driver.format || fmt || 'GeoJSON'
  return this
}
 
Ogr2ogr.prototype.options = function(arr) {
  this._options = arr
  return this
}
 
Ogr2ogr.prototype.destination = function(str) {
  this._destination = str
  return this
}
 
Ogr2ogr.prototype.skipfailures = function() {
  this._skipfailures = true
  return this
}
 
Ogr2ogr.prototype.timeout = function(ms) {
  this._timeout = ms
  return this
}
 
Ogr2ogr.prototype.project = function(dest, src) {
  this._targetSrs = dest
  if (src) this._sourceSrs = src
  return this
}
 
Ogr2ogr.prototype.exec = function(cb) {
  var ogr2ogr = this
  var buf = []
  var one = util.oneCallback(cb)
 
  this.stream()
    .on('data', function(chunk) { buf.push(chunk) })
    .on('error', one)
    .on('close', function() {
      var data = Buffer.concat(buf)
      if (ogr2ogr._format == 'GeoJSON') {
        try { data = JSON.parse(data) }
        catch (er) { return one(er) }
      }
      one(null, data)
    })
}
 
Ogr2ogr.prototype.stream = function() {
  return this._run()
}
 
Ogr2ogr.prototype._getOrgInPath = function(cb) {
  var ogr2ogr = this
  var one = util.oneCallback(cb)
 
  if (this._inStream) {
    util.writeStream(this._inStream, this._inDriver.output, getInFilePath)
  }
  else if (this._inGeoJSON) {
    util.writeGeoJSON(this._inGeoJSON, getInFilePath)
  }
  else {
    getInFilePath(null, this._inPath)
  }
 
  function getInFilePath(er, fpath) {
    if (er) return one(er)
 
    ogr2ogr._inPath = fpath
 
    ogr2ogr._isZipIn = /zip|kmz/.test(path.extname(fpath)) && !/^\/vsizip\//.test(fpath)
    ogr2ogr._isCsvIn = /csv/.test(path.extname(fpath))
    ogr2ogr._isZipOut = ogr2ogr._driver.output == 'zip'
 
    ogr2ogr._ogrOutPath = ogr2ogr._isZipOut ? util.genTmpPath() : '/vsistdout/'
 
    if (ogr2ogr._isZipIn) {
      zip.extract(fpath, function(er2, fpath2) {
        if (er2) return one(er2)
        zip.findOgrFile(fpath2, one)
      })
    }
    else if (ogr2ogr._isCsvIn) {
      csv.makeVrt(fpath, function(err, vrt) {
        if (vrt && /\.vrt$/.test(vrt)) {
          // always set a source srs
          if (!ogr2ogr._sourceSrs) ogr2ogr._sourceSrs = ogr2ogr._targetSrs
        } else {
          // no geo data so no target srs
          delete ogr2ogr._targetSrs
        }
        one(err, vrt)
      })
    }
    else {
      one(null, fpath)
    }
  }
}
 
Ogr2ogr.prototype._run = function() {
  var ogr2ogr = this
  var ostream = new stream.PassThrough()
 
  this._getOrgInPath(function(er, ogrInPath) {
    if (er) return wrapUp(er)
 
    ogr2ogr._ogrInPath = ogrInPath
    var args = ['-f', ogr2ogr._format]
    if (ogr2ogr._skipfailures) args.push('-skipfailures')
    if (ogr2ogr._sourceSrs) args.push('-s_srs', ogr2ogr._sourceSrs)
    if (ogr2ogr._targetSrs) {
      args.push('-t_srs', ogr2ogr._targetSrs)
      args.push('-a_srs', ogr2ogr._targetSrs)
    }
    args.push(ogr2ogr._destination || ogr2ogr._ogrOutPath, ogrInPath)
    if (ogr2ogr._options) args = args.concat(ogr2ogr._options)
 
    var errbuf = ''
 
    var s = cp.spawn('ogr2ogr', logCommand(args))
 
    if (!ogr2ogr._isZipOut) s.stdout.pipe(ostream, {end: false})
 
    var one = util.oneCallback(wrapUp)
 
    s.stderr.setEncoding('ascii')
    s.stderr.on('data', function(chunk) {
      errbuf += chunk
    })
    s.on('error', function(err) {
      if (errbuf) errbuf += '\n' + err
      else errbuf = err
    })
    s.on('close', function(code) {
      clearTimeout(killTimeout)
      one(code ? new Error(errbuf || 'ogr2ogr failed to do the conversion') : null)
    })
 
    var killTimeout = setTimeout(function() {
      if (s._handle) {
        ostream.emit('error', new Error('ogr2ogr took longer than ' + ogr2ogr._timeout + ' to complete'))
        s.stdout.destroy()
        s.stderr.destroy()
        s.kill('SIGKILL')
      }
    }, ogr2ogr._timeout)
  })
 
  function wrapUp(er) {
    if (er) {
      ostream.emit('error', er)
      return ogr2ogr._clean()
    }
    if (!ogr2ogr._isZipOut) {
      ostream.emit('end')
      ostream.emit('close')
      return ogr2ogr._clean()
    }
 
    var zs = zip.createZipStream(ogr2ogr._ogrOutPath)
    zs.on('error', function(er2) { ostream.emit('error', er2) })
    zs.on('end', function() { ostream.emit('close'); ogr2ogr._clean() })
    zs.pipe(ostream)
  }
 
  return ostream
}
 
Ogr2ogr.prototype._clean = function() {
  var all = util.allCallback(this._testClean)
 
  if (this._inStream && this._driver.output == 'zip') {
    util.rmDir(this._inPath, all())
  }
  else if (this._inStream || this._inGeoJSON) {
    util.rmFile(this._inPath, all())
  }
 
  if (this._isZipIn && this._ogrInPath) {
    util.rmParentDir(this._ogrInPath, all())
  }
  if (this._isCsvIn && /vrt/.test(this._ogrInPath)) {
    util.rmFile(this._ogrInPath, all())
  }
  if (this._isZipOut) {
    util.rmDir(this._ogrOutPath, all())
  }
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
1
1
1
1
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
var fs = require('fs')
var path = require('path')
var CSV = require('comma-separated-values')
var util = require('./util')
 
var BASE_VRT = '<OGRVRTDataSource>\n\
                  <OGRVRTLayer name="{{name}}">\n\
                    <SrcDataSource>{{file}}</SrcDataSource>\n\
                    <GeometryType>wkbUnknown</GeometryType>\n\
                    <GeometryField encoding="{{enc}}" {{encopt}} />\n\
                  </OGRVRTLayer>\n\
                </OGRVRTDataSource>'
 
var extractHead = function(fpath, cb) {
  var sf = fs.createReadStream(fpath)
  var one = util.oneCallback(cb)
  var data = ''
  sf.on('data', function(chunk) {
    data += chunk
    if (data) {
      sf.pause()
      sf.destroy()
      sf.emit('end')
    }
  })
  sf.on('error', one)
  sf.on('end', util.oneCallback(function() {
    CSV.forEach(data.split(/(?:\n|\r\n|\r)/g).shift(), function(head) {
      one(null, head)
    })
    // if there is nothing to parse
    one()
  }))
}
 
exports.makeVrt = function(fpath, cb) {
  extractHead(fpath, function(er, headers) {
    if (er) return cb(er)
 
    var geo = {}
    headers.forEach(function(header) {
      var ht = (header + '').trim()
      switch (true) {
      case /\b(lon|longitude|lng|x)\b/i.test(ht):
        geo.x = header
        break
      case /\b(lat|latitude|y)\b/i.test(ht):
        geo.y = header
        break
      case /\b(the_geom|geom)\b/i.test(ht):
        geo.geom = header
        break
      default:
      }
    })
 
    if (!geo.geom && !geo.x) return cb(null, fpath) // no geometry fields, parse attributes
 
    var vrtData = util.tmpl(BASE_VRT, {
      file: fpath,
      name: path.basename(fpath, '.csv'),
      enc: geo.geom ? 'WKT' : 'PointFromColumns',
      encopt: geo.geom
                ? 'field="' + geo.geom + '"'
                : 'x="' + geo.x + '" y="' + geo.y + '"',
    })
 
    var vrtPath = util.genTmpPath() + '.vrt'
    return fs.writeFile(vrtPath, vrtData, function(er) {
      cb(er, vrtPath)
    })
  })
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
1
1
1
 
1
1
1
 
1
 
 
 
 
 
 
1
1
 
 
 
1
1
1
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
var path = require('path')
var tmpdir = require('os').tmpdir()
Iif (tmpdir === '/src') tmpdir = '/tmp' // docker issue
 
var fs = require('fs')
var rimraf = require('rimraf')
var drivers = require('./drivers.json')
 
exports.tmpl = function(tmpl, data) {
  for (var label in data) {
    tmpl = tmpl.replace('{{' + label + '}}', data[label])
  }
  return tmpl
}
 
var genInc = Date.now()
var genTmpPath = exports.genTmpPath = function() {
  return path.join(tmpdir, 'ogr_' + (genInc++).toString(14))
}
 
exports.rmParentDir = function(fpath, cb) { rimraf(path.dirname(fpath), cb) }
exports.rmDir = function(dpath, cb) { rimraf(dpath, cb) }
exports.rmFile = function(fpath, cb) { fs.unlink(fpath, cb) }
 
exports.getDriver = function(fmt) {
  for (var i = 0; i < drivers.length; i++) {
    if (drivers[i].format == fmt || drivers[i].aliases.indexOf(fmt) > -1) return drivers[i]
  }
  return {}
}
 
exports.writeStream = function(ins, ext, cb) {
  var fpath = genTmpPath() + '.' + ext
  var ws = fs.createWriteStream(fpath)
  var one = exports.oneCallback(cb)
 
  ins.pipe(ws)
    .on('error', one)
    .on('finish', function() {
      one(null, fpath)
    })
}
 
exports.writeGeoJSON = function(obj, cb) {
  var fpath = genTmpPath() + '.json'
  fs.writeFile(fpath, JSON.stringify(obj), function(er) {
    cb(er, fpath)
  })
}
 
exports.oneCallback = function(cb) {
  var called = false
  return function(er, data) {
    if (called) return
    called = true
    cb(er, data)
  }
}
 
// exports.chainCallback = function (/* args, cb */) {
//   var initArgs = Array.prototype.slice.call(arguments)
//   var cb = initArgs.pop()
//   initArgs.unshift(null)
//
//   return function () {
//     var fns = Array.prototype.slice.call(arguments)
//
//     function run (er, data) {
//       var fn = fns.shift()
//       if (!op || er) cb(er, data)
//       fn.call(null, er, data)
//     }
//
//     initArgs.push(run)
//     fns.shift().apply(null, initArgs)
//   }
// }
 
exports.allCallback = function(cb) {
  var one = exports.oneCallback(cb)
  var expect = 0
  var total = 0
 
  setImmediate(function() { if (expect == 0) one(null, total) })
 
  return function() {
    expect++, total++
    return function(er) {
      if (er) return one(er)
      if (--expect == 0) one(null, total)
    }
  }
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
1
1
1
1
1
1
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
var path = require('path')
var fs = require('fs')
var findit = require('findit')
var DecompressZip = require('decompress-zip')
var archiver = require('archiver')
var util = require('./util')
 
exports.extract = function(fpath, cb) {
  var zip = new DecompressZip(fpath)
  var zipPath = util.genTmpPath()
  var one = util.oneCallback(cb)
 
  zip
    .on('extract', function() {
      one(null, zipPath)
    })
    .on('error', one)
    .extract({path: zipPath})
}
 
var validOgrRe = /^\.(shp|kml|tab|itf|000|rt1|gml|vrt)$/i
exports.findOgrFile = function(dpath, cb) {
  var finder = findit(dpath)
  var found
 
  finder.on('file', function(file, stat) {
    if (validOgrRe.test(path.extname(file))) found = file
  })
  finder.on('error', function(er) {
    cb(er)
    finder.stop() // prevent multiple callbacks, stop at first error
  })
  finder.on('end', function() {
    if (!found) return cb(new Error('No valid files found'))
    cb(null, found)
  })
}
 
exports.createZipStream = function(dpath) {
  var zs = archiver('zip')
 
  fs.readdir(dpath, function(er, files) {
    if (er) return zs.emit('error', er)
 
    files.forEach(function(file) {
      var f = fs.createReadStream(path.join(dpath, file))
      zs.append(f, {name: file})
    })
    zs.finalize(function(er) {
      if (er) zs.emit('error', er)
    })
  })
 
  return zs
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
 
 
 
 
 
 
 
1
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
3
 
 
 
3
 
 
 
3
 
 
 
3
 
 
1
1
1
 
1
 
/**
 * Archiver Vending
 *
 * @ignore
 * @license [MIT]{@link https://github.com/archiverjs/node-archiver/blob/master/LICENSE}
 * @copyright (c) 2012-2014 Chris Talkington, contributors.
 */
var Archiver = require('./lib/core');
 
var formats = {};
 
/**
 * Dispenses a new Archiver instance.
 *
 * @constructor
 * @param  {String} format The archive format to use.
 * @param  {Object} options See [Archiver]{@link Archiver}
 * @return {Archiver}
 */
var vending = function(format, options) {
  return vending.create(format, options);
};
 
/**
 * Creates a new Archiver instance.
 *
 * @param  {String} format The archive format to use.
 * @param  {Object} options See [Archiver]{@link Archiver}
 * @return {Archiver}
 */
vending.create = function(format, options) {
  if (formats[format]) {
    var instance = new Archiver(format, options);
    instance.setFormat(format);
    instance.setModule(new formats[format](options));
 
    return instance;
  } else {
    throw new Error('create(' + format + '): format not registered');
  }
};
 
/**
 * Registers a format for use with archiver.
 *
 * @param  {String} format The name of the format.
 * @param  {Function} module The function for archiver to interact with.
 * @return void
 */
vending.registerFormat = function(format, module) {
  Iif (formats[format]) {
    throw new Error('register(' + format + '): format already registered');
  }
 
  Iif (typeof module !== 'function') {
    throw new Error('register(' + format + '): format module invalid');
  }
 
  Iif (typeof module.prototype.append !== 'function' || typeof module.prototype.finalize !== 'function') {
    throw new Error('register(' + format + '): format module missing methods');
  }
 
  formats[format] = module;
};
 
vending.registerFormat('zip', require('./lib/plugins/zip'));
vending.registerFormat('tar', require('./lib/plugins/tar'));
vending.registerFormat('json', require('./lib/plugins/json'));
 
module.exports = vending;
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
 
 
 
 
 
 
 
1
1
1
1
1
 
1
1
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/**
 * Archiver Core
 *
 * @ignore
 * @license [MIT]{@link https://github.com/archiverjs/node-archiver/blob/master/LICENSE}
 * @copyright (c) 2012-2014 Chris Talkington, contributors.
 */
var fs = require('fs');
var glob = require('glob');
var async = require('async');
var _ = require('lodash');
var util = require('archiver-utils');
 
var inherits = require('util').inherits;
var Transform = require('readable-stream').Transform;
 
var win32 = process.platform === 'win32';
 
/**
 * @constructor
 * @param {String} format The archive format to use.
 * @param {(CoreOptions|TransformOptions)} options See also {@link ZipOptions} and {@link TarOptions}.
 */
var Archiver = function(format, options) {
  if (!(this instanceof Archiver)) {
    return new Archiver(format, options);
  }
 
  if (typeof format !== 'string') {
    options = format;
    format = 'zip';
  }
 
  options = this.options = util.defaults(options, {
    highWaterMark: 1024 * 1024,
    statConcurrency: 4
  });
 
  Transform.call(this, options);
 
  this._entries = [];
  this._format = false;
  this._module = false;
  this._pending = 0;
  this._pointer = 0;
 
  this._queue = async.queue(this._onQueueTask.bind(this), 1);
  this._queue.drain = this._onQueueDrain.bind(this);
 
  this._statQueue = async.queue(this._onStatQueueTask.bind(this), options.statConcurrency);
 
  this._state = {
    aborted: false,
    finalize: false,
    finalizing: false,
    finalized: false,
    modulePiped: false
  };
 
  this._streams = [];
};
 
inherits(Archiver, Transform);
 
/**
 * Internal logic for `abort`.
 *
 * @private
 * @return void
 */
Archiver.prototype._abort = function() {
  this._state.aborted = true;
  this._queue.kill();
  this._statQueue.kill();
 
  if (this._queue.idle()) {
    this._shutdown();
  }
};
 
/**
 * Internal helper for appending files.
 *
 * @private
 * @param  {String} filepath The source filepath.
 * @param  {EntryData} data The entry data.
 * @return void
 */
Archiver.prototype._append = function(filepath, data) {
  data = data || {};
 
  var task = {
    source: null,
    filepath: filepath
  };
 
  if (!data.name) {
    data.name = filepath;
  }
 
  data.sourcePath = filepath;
  task.data = data;
 
  if (data.stats && data.stats instanceof fs.Stats) {
    task = this._updateQueueTaskWithStats(task, data.stats);
    this._queue.push(task);
  } else {
    this._statQueue.push(task);
  }
};
 
/**
 * Internal logic for `finalize`.
 *
 * @private
 * @return void
 */
Archiver.prototype._finalize = function() {
  if (this._state.finalizing || this._state.finalized || this._state.aborted) {
    return;
  }
 
  this._state.finalizing = true;
 
  this._moduleFinalize();
 
  this._state.finalizing = false;
  this._state.finalized = true;
};
 
/**
 * Checks the various state variables to determine if we can `finalize`.
 *
 * @private
 * @return {Boolean}
 */
Archiver.prototype._maybeFinalize = function() {
  if (this._state.finalizing || this._state.finalized || this._state.aborted) {
    return false;
  }
 
  if (this._state.finalize && this._pending === 0 && this._queue.idle() && this._statQueue.idle()) {
    this._finalize();
    return true;
  }
 
  return false;
};
 
/**
 * Appends an entry to the module.
 *
 * @private
 * @fires  Archiver#entry
 * @param  {(Buffer|Stream)} source
 * @param  {EntryData} data
 * @param  {Function} callback
 * @return void
 */
Archiver.prototype._moduleAppend = function(source, data, callback) {
  if (this._state.aborted) {
    callback();
    return;
  }
 
  this._module.append(source, data, function(err) {
    this._task = null;
 
    if (this._state.aborted) {
      this._shutdown();
      return;
    }
 
    if (err) {
      this.emit('error', err);
      setImmediate(callback);
      return;
    }
 
    /**
     * Fires when the entry's input has been processed and appended to the archive.
     *
     * @event Archiver#entry
     * @type {EntryData}
     */
    this.emit('entry', data);
    this._entries.push(data);
 
    setImmediate(callback);
  }.bind(this));
};
 
/**
 * Finalizes the module.
 *
 * @private
 * @return void
 */
Archiver.prototype._moduleFinalize = function() {
  if (typeof this._module.finalize === 'function') {
    this._module.finalize();
  } else if (typeof this._module.end === 'function') {
    this._module.end();
  } else {
    this.emit('error', new Error('module: no suitable finalize/end method found'));
    return;
  }
};
 
/**
 * Pipes the module to our internal stream with error bubbling.
 *
 * @private
 * @return void
 */
Archiver.prototype._modulePipe = function() {
  this._module.on('error', this._onModuleError.bind(this));
  this._module.pipe(this);
  this._state.modulePiped = true;
};
 
/**
 * Determines if the current module supports a defined feature.
 *
 * @private
 * @param  {String} key
 * @return {Boolean}
 */
Archiver.prototype._moduleSupports = function(key) {
  if (!this._module.supports || !this._module.supports[key]) {
    return false;
  }
 
  return this._module.supports[key];
};
 
/**
 * Unpipes the module from our internal stream.
 *
 * @private
 * @return void
 */
Archiver.prototype._moduleUnpipe = function() {
  this._module.unpipe(this);
  this._state.modulePiped = false;
};
 
/**
 * Normalizes entry data with fallbacks for key properties.
 *
 * @private
 * @param  {Object} data
 * @param  {fs.Stats} stats
 * @return {Object}
 */
Archiver.prototype._normalizeEntryData = function(data, stats) {
  data = util.defaults(data, {
    type: 'file',
    name: null,
    date: null,
    mode: null,
    prefix: null,
    sourcePath: null,
    stats: false
  });
 
  if (stats && data.stats === false) {
    data.stats = stats;
  }
 
  var isDir = data.type === 'directory';
 
  if (data.name) {
    if (typeof data.prefix === 'string' && '' !== data.prefix) {
      data.name = data.prefix + '/' + data.name;
      data.prefix = null;
    }
 
    data.name = util.sanitizePath(data.name);
 
    if (data.name.slice(-1) === '/') {
      isDir = true;
      data.type = 'directory';
    } else if (isDir) {
      data.name += '/';
    }
  }
 
  // 511 === 0777; 493 === 0755; 438 === 0666; 420 === 0644
  if (typeof data.mode === 'number') {
    if (win32) {
      data.mode &= 511;
    } else {
      data.mode &= 4095
    }
  } else if (data.stats && data.mode === null) {
    if (win32) {
      data.mode = data.stats.mode & 511;
    } else {
      data.mode = data.stats.mode & 4095;
    }
 
    // stat isn't reliable on windows; force 0755 for dir
    if (win32 && isDir) {
      data.mode = 493;
    }
  } else if (data.mode === null) {
    data.mode = isDir ? 493 : 420;
  }
 
  if (data.stats && data.date === null) {
    data.date = data.stats.mtime;
  } else {
    data.date = util.dateify(data.date);
  }
 
  return data;
};
 
/**
 * Error listener that re-emits error on to our internal stream.
 *
 * @private
 * @param  {Error} err
 * @return void
 */
Archiver.prototype._onModuleError = function(err) {
  this.emit('error', err);
};
 
/**
 * Checks the various state variables after queue has drained to determine if
 * we need to `finalize`.
 *
 * @private
 * @return void
 */
Archiver.prototype._onQueueDrain = function() {
  if (this._state.finalizing || this._state.finalized || this._state.aborted) {
    return;
  }
 
  if (this._state.finalize && this._pending === 0 && this._queue.idle() && this._statQueue.idle()) {
    this._finalize();
    return;
  }
};
 
/**
 * Appends each queue task to the module.
 *
 * @private
 * @param  {Object} task
 * @param  {Function} callback
 * @return void
 */
Archiver.prototype._onQueueTask = function(task, callback) {
  if (this._state.finalizing || this._state.finalized || this._state.aborted) {
    callback();
    return;
  }
 
  this._task = task;
  this._moduleAppend(task.source, task.data, callback);
};
 
/**
 * Performs a file stat and reinjects the task back into the queue.
 *
 * @private
 * @param  {Object} task
 * @param  {Function} callback
 * @return void
 */
Archiver.prototype._onStatQueueTask = function(task, callback) {
  if (this._state.finalizing || this._state.finalized || this._state.aborted) {
    callback();
    return;
  }
 
  fs.stat(task.filepath, function(err, stats) {
    if (this._state.aborted) {
      setImmediate(callback);
      return;
    }
 
    if (err) {
      this.emit('error', err);
      setImmediate(callback);
      return;
    }
 
    task = this._updateQueueTaskWithStats(task, stats);
 
    if (task.source !== null) {
      this._queue.push(task);
      setImmediate(callback);
    } else {
      this.emit('error', new Error('unsupported entry: ' + task.filepath));
      setImmediate(callback);
      return;
    }
  }.bind(this));
};
 
/**
 * Unpipes the module and ends our internal stream.
 *
 * @private
 * @return void
 */
Archiver.prototype._shutdown = function() {
  this._moduleUnpipe();
  this.end();
};
 
/**
 * Tracks the bytes emitted by our internal stream.
 *
 * @private
 * @param  {Buffer} chunk
 * @param  {String} encoding
 * @param  {Function} callback
 * @return void
 */
Archiver.prototype._transform = function(chunk, encoding, callback) {
  if (chunk) {
    this._pointer += chunk.length;
  }
 
  callback(null, chunk);
};
 
/**
 * Updates and normalizes a queue task using stats data.
 *
 * @private
 * @param  {Object} task
 * @param  {fs.Stats} stats
 * @return {Object}
 */
Archiver.prototype._updateQueueTaskWithStats = function(task, stats) {
  if (stats.isFile()) {
    task.data.type = 'file';
    task.data.sourceType = 'stream';
    task.source = util.lazyReadStream(task.filepath);
  } else if (stats.isDirectory() && this._moduleSupports('directory')) {
    task.data.name = util.trailingSlashIt(task.data.name);
    task.data.type = 'directory';
    task.data.sourcePath = util.trailingSlashIt(task.filepath);
    task.data.sourceType = 'buffer';
    task.source = new Buffer(0);
  } else {
    return task;
  }
 
  task.data = this._normalizeEntryData(task.data, stats);
  return task;
};
 
/**
 * Aborts the archiving process, taking a best-effort approach, by:
 *
 * - removing any pending queue tasks
 * - allowing any active queue workers to finish
 * - detaching internal module pipes
 * - ending both sides of the Transform stream
 *
 * It will NOT drain any remaining sources.
 *
 * @return {this}
 */
Archiver.prototype.abort = function() {
  if (this._state.aborted || this._state.finalized) {
    return this;
  }
 
  this._abort();
 
  return this;
};
 
/**
 * Appends an input source (text string, buffer, or stream) to the instance.
 *
 * When the instance has received, processed, and emitted the input, the `entry`
 * event is fired.
 *
 * @fires  Archiver#entry
 * @param  {(Buffer|Stream|String)} source The input source.
 * @param  {EntryData} data See also {@link ZipEntryData} and {@link TarEntryData}.
 * @return {this}
 */
Archiver.prototype.append = function(source, data) {
  if (this._state.finalize || this._state.aborted) {
    this.emit('error', new Error('append: queue closed'));
    return this;
  }
 
  data = this._normalizeEntryData(data);
 
  if (typeof data.name !== 'string' || data.name.length === 0) {
    this.emit('error', new Error('append: entry name must be a non-empty string value'));
    return this;
  }
 
  if (data.type === 'directory' && !this._moduleSupports('directory')) {
    this.emit('error', new Error('append: entries of "directory" type not currently supported by this module'));
    return this;
  }
 
  source = util.normalizeInputSource(source);
 
  if (Buffer.isBuffer(source)) {
    data.sourceType = 'buffer';
  } else if (util.isStream(source)) {
    data.sourceType = 'stream';
  } else {
    this.emit('error', new Error('append: input source must be valid Stream or Buffer instance'));
    return this;
  }
 
  this._queue.push({
    data: data,
    source: source
  });
 
  return this;
};
 
/**
 * Appends multiple entries from passed array of src-dest mappings.
 *
 * A [lazystream]{@link https://github.com/jpommerening/node-lazystream} wrapper is
 * used to prevent issues with open file limits.
 *
 * @deprecated 0.21.0
 * @param  {Object[]} mappings
 * @param  {(EntryData|Function)} mappings[].data See also {@link ZipEntryData}
 * and {@link TarEntryData}.
 * @param  {(String|Array)} mappings[].src Pattern(s) to match, relative to the `cwd`.
 * @param  {String} mappings[].dest Destination path prefix.
 * @param  {Boolean} mappings[].expand Process a dynamic src-dest file mapping.
 * @param  {String} mappings[].cwd All `src` matches are relative to (but don't include)
 * this path. requires `expand`.
 * @param  {String} mappings[].ext Replace any existing extension with this value in
 * generated `dest` paths. requires `expand`.
 * @param  {String} mappings[].extDot Used to indicate where the period indicating
 * the extension is located. requires `expand`.
 * @param  {String} mappings[].flatten Remove all path parts from generated `dest`
 * paths. requires `expand`.
 * @param  {*} mappings[].* See [node-glob]{@link https://github.com/isaacs/node-glob#properties}
 * and [minimatch]{@link https://github.com/isaacs/minimatch#properties} documentation
 * for additional properties.
 * @return {this}
 */
Archiver.prototype.bulk = function(mappings) {
  if (this._state.finalize || this._state.aborted) {
    this.emit('error', new Error('bulk: queue closed'));
    return this;
  }
 
  if (!Array.isArray(mappings)) {
    mappings = [mappings];
  }
 
  var self = this;
  var files = util.file.normalizeFilesArray(mappings);
 
  files.forEach(function(file){
    var isExpandedPair = file.orig.expand || false;
    var data = {};
    var dataFunction = false;
 
    if (typeof file.data === 'function') {
      dataFunction = file.data;
    } else if (typeof file.data === 'object') {
      data = file.data;
    }
 
    file.src.forEach(function(filepath) {
      var entryData = _.extend({}, data);
      var entryName = isExpandedPair ? file.dest : (file.dest || '') + '/' + filepath;
      entryData.name = util.sanitizePath(entryName);
 
      if (entryData.name === '.') {
        return;
      }
 
      try {
        if (dataFunction) {
          entryData = dataFunction(entryData);
 
          if (typeof entryData !== 'object') {
            throw new Error('bulk: invalid data returned from custom function');
          }
        }
      } catch(e) {
        self.emit('error', e);
        return;
      }
 
      self._append(filepath, entryData);
    });
  });
 
  return this;
};
 
/**
 * Appends a directory and its files, recursively, given its dirpath.
 *
 * @param  {String} dirpath The source directory path.
 * @param  {String} destpath The destination path within the archive.
 * @param  {(EntryData|Function)} data See also [ZipEntryData]{@link ZipEntryData} and
 * [TarEntryData]{@link TarEntryData}.
 * @return {this}
 */
Archiver.prototype.directory = function(dirpath, destpath, data) {
  if (this._state.finalize || this._state.aborted) {
    this.emit('error', new Error('directory: queue closed'));
    return this;
  }
 
  if (typeof dirpath !== 'string' || dirpath.length === 0) {
    this.emit('error', new Error('directory: dirpath must be a non-empty string value'));
    return this;
  }
 
  this._pending++;
 
  if (destpath === false) {
    destpath = '';
  } else if (typeof destpath !== 'string'){
    destpath = dirpath;
  }
 
  var dataFunction = false;
  if (typeof data === 'function') {
    dataFunction = data;
    data = {};
  } else if (typeof data !== 'object') {
    data = {};
  }
 
  var self = this;
 
  util.walkdir(dirpath, function(err, results) {
    if (err) {
      self.emit('error', err);
    } else {
      results.forEach(function(file) {
        var entryData = _.extend({}, data);
        entryData.name = file.relative;
        entryData.prefix = destpath;
        entryData.stats = file.stats;
 
        try {
          if (dataFunction) {
            entryData = dataFunction(entryData);
 
            if (typeof entryData !== 'object') {
              throw new Error('directory: invalid data returned from custom function');
            }
          }
        } catch(e) {
          self.emit('error', e);
          return;
        }
 
        self._append(file.path, entryData);
      });
    }
 
    self._pending--;
    self._maybeFinalize();
  });
 
  return this;
};
 
/**
 * Appends a file given its filepath using a
 * [lazystream]{@link https://github.com/jpommerening/node-lazystream} wrapper to
 * prevent issues with open file limits.
 *
 * When the instance has received, processed, and emitted the file, the `entry`
 * event is fired.
 *
 * @param  {String} filepath The source filepath.
 * @param  {EntryData} data See also [ZipEntryData]{@link ZipEntryData} and
 * [TarEntryData]{@link TarEntryData}.
 * @return {this}
 */
Archiver.prototype.file = function(filepath, data) {
  if (this._state.finalize || this._state.aborted) {
    this.emit('error', new Error('file: queue closed'));
    return this;
  }
 
  if (typeof filepath !== 'string' || filepath.length === 0) {
    this.emit('error', new Error('file: filepath must be a non-empty string value'));
    return this;
  }
 
  this._append(filepath, data);
 
  return this;
};
 
/**
 * Appends multiple files that match a glob pattern.
 *
 * @param  {String} pattern The [glob pattern]{@link https://github.com/isaacs/node-glob#glob-primer} to match.
 * @param  {Object} options See [node-glob]{@link https://github.com/isaacs/node-glob#options}.
 * @param  {EntryData} data See also [ZipEntryData]{@link ZipEntryData} and
 * [TarEntryData]{@link TarEntryData}.
 * @return {this}
 */
Archiver.prototype.glob = function(pattern, options, data) {
  this._pending++;
 
  options = util.defaults(options, {
    stat: false
  });
 
  var globber = glob(pattern, options, function(err, files) {
    if (err) {
      this.emit('error', err);
      return this;
    }
 
    files.forEach(function(file) {
      entryData = _.extend({}, data);
 
      if (options.cwd) {
        entryData.name = file;
        file = globber._makeAbs(file);
      }
 
      this._append(file, entryData);
    }, this);
 
    this._pending--;
    this._maybeFinalize();
  }.bind(this));
 
  return this;
};
 
/**
 * Finalizes the instance and prevents further appending to the archive
 * structure (queue will continue til drained).
 *
 * The `end`, `close` or `finish` events on the destination stream may fire
 * right after calling this method so you should set listeners beforehand to
 * properly detect stream completion.
 *
 * @return {this}
 */
Archiver.prototype.finalize = function() {
  if (this._state.aborted) {
    this.emit('error', new Error('finalize: archive was aborted'));
    return this;
  }
 
  if (this._state.finalize) {
    this.emit('error', new Error('finalize: archive already finalizing'));
    return this;
  }
 
  this._state.finalize = true;
 
  if (this._pending === 0 && this._queue.idle() && this._statQueue.idle()) {
    this._finalize();
  }
 
  return this;
};
 
/**
 * Sets the module format name used for archiving.
 *
 * @param {String} format The name of the format.
 * @return {this}
 */
Archiver.prototype.setFormat = function(format) {
  if (this._format) {
    this.emit('error', new Error('format: archive format already set'));
    return this;
  }
 
  this._format = format;
 
  return this;
};
 
/**
 * Sets the module used for archiving.
 *
 * @param {Function} module The function for archiver to interact with.
 * @return {this}
 */
Archiver.prototype.setModule = function(module) {
  if (this._state.aborted) {
    this.emit('error', new Error('module: archive was aborted'));
    return this;
  }
 
  if (this._state.module) {
    this.emit('error', new Error('module: module already set'));
    return this;
  }
 
  this._module = module;
  this._modulePipe();
 
  return this;
};
 
/**
 * Returns the current length (in bytes) that has been emitted.
 *
 * @return {Number}
 */
Archiver.prototype.pointer = function() {
  return this._pointer;
};
 
/**
 * Middleware-like helper that has yet to be fully implemented.
 *
 * @private
 * @param  {Function} plugin
 * @return {this}
 */
Archiver.prototype.use = function(plugin) {
  this._streams.push(plugin);
  return this;
};
 
module.exports = Archiver;
 
/**
 * @typedef {Object} CoreOptions
 * @global
 * @property {Number} [statConcurrency=4] Sets the number of workers used to
 * process the internal fs stat queue.
 */
 
/**
 * @typedef {Object} TransformOptions
 * @property {Boolean} [allowHalfOpen=true] If set to false, then the stream
 * will automatically end the readable side when the writable side ends and vice
 * versa.
 * @property {Boolean} [readableObjectMode=false] Sets objectMode for readable
 * side of the stream. Has no effect if objectMode is true.
 * @property {Boolean} [writableObjectMode=false] Sets objectMode for writable
 * side of the stream. Has no effect if objectMode is true.
 * @property {Boolean} [decodeStrings=true] Whether or not to decode strings
 * into Buffers before passing them to _write(). `Writable`
 * @property {String} [encoding=NULL] If specified, then buffers will be decoded
 * to strings using the specified encoding. `Readable`
 * @property {Number} [highWaterMark=16kb] The maximum number of bytes to store
 * in the internal buffer before ceasing to read from the underlying resource.
 * `Readable` `Writable`
 * @property {Boolean} [objectMode=false] Whether this stream should behave as a
 * stream of objects. Meaning that stream.read(n) returns a single value instead
 * of a Buffer of size n. `Readable` `Writable`
 */
 
/**
 * @typedef {Object} EntryData
 * @property {String} name Sets the entry name including internal path.
 * @property {(String|Date)} [date=NOW()] Sets the entry date.
 * @property {Number} [mode=D:0755/F:0644] Sets the entry permissions.
 * @property {String} [prefix] Sets a path prefix for the entry name. Useful
 * when working with methods like `directory` or `glob`.
 * @property {fs.Stats} [stats] Sets the fs stat data for this entry allowing
 * for reduction of fs stat calls when stat data is already known.
 */
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
 
 
 
 
 
 
 
1
1
 
1
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
 
/**
 * JSON Format Plugin
 *
 * @module plugins/json
 * @license [MIT]{@link https://github.com/archiverjs/node-archiver/blob/master/LICENSE}
 * @copyright (c) 2012-2014 Chris Talkington, contributors.
 */
var inherits = require('util').inherits;
var Transform = require('readable-stream').Transform;
 
var crc32 = require('buffer-crc32');
var util = require('archiver-utils');
 
/**
 * @constructor
 * @param {(JsonOptions|TransformOptions)} options
 */
var Json = function(options) {
  if (!(this instanceof Json)) {
    return new Json(options);
  }
 
  options = this.options = util.defaults(options, {});
 
  Transform.call(this, options);
 
  this.supports = {
    directory: true
  };
 
  this.files = [];
};
 
inherits(Json, Transform);
 
/**
 * [_transform description]
 *
 * @private
 * @param  {Buffer}   chunk
 * @param  {String}   encoding
 * @param  {Function} callback
 * @return void
 */
Json.prototype._transform = function(chunk, encoding, callback) {
  callback(null, chunk);
};
 
/**
 * [_writeStringified description]
 *
 * @private
 * @return void
 */
Json.prototype._writeStringified = function() {
  var fileString = JSON.stringify(this.files);
  this.write(fileString);
};
 
/**
 * [append description]
 *
 * @param  {(Buffer|Stream)}   source
 * @param  {EntryData}   data
 * @param  {Function} callback
 * @return void
 */
Json.prototype.append = function(source, data, callback) {
  var self = this;
 
  data.crc32 = 0;
 
  function onend(err, sourceBuffer) {
    if (err) {
      callback(err);
      return;
    }
 
    data.size = sourceBuffer.length || 0;
    data.crc32 = crc32.unsigned(sourceBuffer);
 
    self.files.push(data);
 
    callback(null, data);
  }
 
  if (data.sourceType === 'buffer') {
    onend(null, source);
  } else if (data.sourceType === 'stream') {
    util.collectStream(source, onend);
  }
};
 
/**
 * [finalize description]
 *
 * @return void
 */
Json.prototype.finalize = function() {
  this._writeStringified();
  this.end();
};
 
module.exports = Json;
 
/**
 * @typedef {Object} JsonOptions
 * @global
 */
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
 
 
 
 
 
 
 
1
 
1
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/**
 * TAR Format Plugin
 *
 * @module plugins/tar
 * @license [MIT]{@link https://github.com/archiverjs/node-archiver/blob/master/LICENSE}
 * @copyright (c) 2012-2014 Chris Talkington, contributors.
 */
var zlib = require('zlib');
 
var engine = require('tar-stream');
var util = require('archiver-utils');
 
/**
 * @constructor
 * @param {TarOptions} options
 */
var Tar = function(options) {
  if (!(this instanceof Tar)) {
    return new Tar(options);
  }
 
  options = this.options = util.defaults(options, {
    gzip: false
  });
 
  if (typeof options.gzipOptions !== 'object') {
    options.gzipOptions = {};
  }
 
  this.supports = {
    directory: true
  };
 
  this.engine = engine.pack(options);
  this.compressor = false;
 
  if (options.gzip) {
    this.compressor = zlib.createGzip(options.gzipOptions);
    this.compressor.on('error', this._onCompressorError.bind(this));
  }
};
 
/**
 * [_onCompressorError description]
 *
 * @private
 * @param  {Error} err
 * @return void
 */
Tar.prototype._onCompressorError = function(err) {
  this.engine.emit('error', err);
};
 
/**
 * [append description]
 *
 * @param  {(Buffer|Stream)} source
 * @param  {TarEntryData} data
 * @param  {Function} callback
 * @return void
 */
Tar.prototype.append = function(source, data, callback) {
  var self = this;
 
  data.mtime = data.date;
 
  function append(err, sourceBuffer) {
    if (err) {
      callback(err);
      return;
    }
 
    self.engine.entry(data, sourceBuffer, function(err) {
      callback(err, data);
    });
  }
 
  if (data.sourceType === 'buffer') {
    append(null, source);
  } else if (data.sourceType === 'stream' && data._stats) {
    data.size = data._stats.size;
 
    var entry = self.engine.entry(data, function(err) {
      callback(err, data);
    });
 
    source.pipe(entry);
  } else if (data.sourceType === 'stream') {
    util.collectStream(source, append);
  }
};
 
/**
 * [finalize description]
 *
 * @return void
 */
Tar.prototype.finalize = function() {
  this.engine.finalize();
};
 
/**
 * [on description]
 *
 * @return this.engine
 */
Tar.prototype.on = function() {
  return this.engine.on.apply(this.engine, arguments);
};
 
/**
 * [pipe description]
 *
 * @param  {String} destination
 * @param  {Object} options
 * @return this.engine
 */
Tar.prototype.pipe = function(destination, options) {
  if (this.compressor) {
    return this.engine.pipe.apply(this.engine, [this.compressor]).pipe(destination, options);
  } else {
    return this.engine.pipe.apply(this.engine, arguments);
  }
};
 
/**
 * [unpipe description]
 *
 * @return this.engine
 */
Tar.prototype.unpipe = function() {
  if (this.compressor) {
    return this.compressor.unpipe.apply(this.compressor, arguments);
  } else {
    return this.engine.unpipe.apply(this.engine, arguments);
  }
};
 
module.exports = Tar;
 
/**
 * @typedef {Object} TarOptions
 * @global
 * @property {Boolean} [gzip=false] Compress the tar archive using gzip.
 * @property {Object} [gzipOptions] Passed to [zlib]{@link https://nodejs.org/api/zlib.html#zlib_class_options}
 * to control compression.
 * @property {*} [*] See [tar-stream]{@link https://github.com/mafintosh/tar-stream} documentation for additional properties.
 */
 
/**
 * @typedef {Object} TarEntryData
 * @global
 * @property {String} name Sets the entry name including internal path.
 * @property {(String|Date)} [date=NOW()] Sets the entry date.
 * @property {Number} [mode=D:0755/F:0644] Sets the entry permissions.
 * @property {String} [prefix] Sets a path prefix for the entry name. Useful
 * when working with methods like `directory` or `glob`.
 * @property {fs.Stats} [stats] Sets the fs stat data for this entry allowing
 * for reduction of fs stat calls when stat data is already known.
 */
 
/**
 * TarStream Module
 * @external TarStream
 * @see {@link https://github.com/mafintosh/tar-stream}
 */
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/**
 * ZIP Format Plugin
 *
 * @module plugins/zip
 * @license [MIT]{@link https://github.com/archiverjs/node-archiver/blob/master/LICENSE}
 * @copyright (c) 2012-2014 Chris Talkington, contributors.
 */
var engine = require('zip-stream');
var util = require('archiver-utils');
 
/**
 * @constructor
 * @param {ZipOptions} [options]
 * @param {String} [options.comment] Sets the zip archive comment.
 * @param {Boolean} [options.forceLocalTime=false] Forces the archive to contain local file times instead of UTC.
 * @param {Boolean} [options.forceZip64=false] Forces the archive to contain ZIP64 headers.
 * @param {Boolean} [options.store=false] Sets the compression method to STORE.
 * @param {Object} [options.zlib] Passed to [zlib]{@link https://nodejs.org/api/zlib.html#zlib_class_options}
 */
var Zip = function(options) {
  if (!(this instanceof Zip)) {
    return new Zip(options);
  }
 
  options = this.options = util.defaults(options, {
    comment: '',
    forceUTC: false,
    store: false
  });
 
  this.supports = {
    directory: true
  };
 
  this.engine = new engine(options);
};
 
/**
 * @param  {(Buffer|Stream)} source
 * @param  {ZipEntryData} data
 * @param  {String} data.name Sets the entry name including internal path.
 * @param  {(String|Date)} [data.date=NOW()] Sets the entry date.
 * @param  {Number} [data.mode=D:0755/F:0644] Sets the entry permissions.
 * @param  {String} [data.prefix] Sets a path prefix for the entry name. Useful
 * when working with methods like `directory` or `glob`.
 * @param  {fs.Stats} [data.stats] Sets the fs stat data for this entry allowing
 * for reduction of fs stat calls when stat data is already known.
 * @param  {Boolean} [data.store=ZipOptions.store] Sets the compression method to STORE.
 * @param  {Function} callback
 * @return void
 */
Zip.prototype.append = function(source, data, callback) {
  this.engine.entry(source, data, callback);
};
 
/**
 * @return void
 */
Zip.prototype.finalize = function() {
  this.engine.finalize();
};
 
/**
 * @return this.engine
 */
Zip.prototype.on = function() {
  return this.engine.on.apply(this.engine, arguments);
};
 
/**
 * @return this.engine
 */
Zip.prototype.pipe = function() {
  return this.engine.pipe.apply(this.engine, arguments);
};
 
/**
 * @return this.engine
 */
Zip.prototype.unpipe = function() {
  return this.engine.unpipe.apply(this.engine, arguments);
};
 
module.exports = Zip;
 
/**
 * @typedef {Object} ZipOptions
 * @global
 * @property {String} [comment] Sets the zip archive comment.
 * @property {Boolean} [forceLocalTime=false] Forces the archive to contain local file times instead of UTC.
 * @property {Boolean} [forceZip64=false] Forces the archive to contain ZIP64 headers.
 * @property {Boolean} [store=false] Sets the compression method to STORE.
 * @property {Object} [zlib] Passed to [zlib]{@link https://nodejs.org/api/zlib.html#zlib_class_options}
 * to control compression.
 * @property {*} [*] See [zip-stream]{@link https://archiverjs.com/zip-stream/ZipStream.html} documentation for current list of properties.
 */
 
/**
 * @typedef {Object} ZipEntryData
 * @global
 * @property {String} name Sets the entry name including internal path.
 * @property {(String|Date)} [date=NOW()] Sets the entry date.
 * @property {Number} [mode=D:0755/F:0644] Sets the entry permissions.
 * @property {String} [prefix] Sets a path prefix for the entry name. Useful
 * when working with methods like `directory` or `glob`.
 * @property {fs.Stats} [stats] Sets the fs stat data for this entry allowing
 * for reduction of fs stat calls when stat data is already known.
 * @property {Boolean} [store=ZipOptions.store] Sets the compression method to STORE.
 */
 
/**
 * ZipStream Module
 * @external ZipStream
 * @see {@link https://archiverjs.com/zip-stream/ZipStream.html}
 */
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
 
 
 
 
 
 
 
1
1
 
1
1
 
1
 
1
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/**
 * archiver-utils
 *
 * Copyright (c) 2012-2014 Chris Talkington, contributors.
 * Licensed under the MIT license.
 * https://github.com/archiverjs/node-archiver/blob/master/LICENSE-MIT
 */
var fs = require('graceful-fs');
var path = require('path');
 
var _ = require('lodash');
var glob = require('glob');
 
var file = module.exports = {};
 
var pathSeparatorRe = /[\/\\]/g;
 
// Process specified wildcard glob patterns or filenames against a
// callback, excluding and uniquing files in the result set.
var processPatterns = function(patterns, fn) {
  // Filepaths to return.
  var result = [];
  // Iterate over flattened patterns array.
  _.flatten(patterns).forEach(function(pattern) {
    // If the first character is ! it should be omitted
    var exclusion = pattern.indexOf('!') === 0;
    // If the pattern is an exclusion, remove the !
    if (exclusion) { pattern = pattern.slice(1); }
    // Find all matching files for this pattern.
    var matches = fn(pattern);
    if (exclusion) {
      // If an exclusion, remove matching files.
      result = _.difference(result, matches);
    } else {
      // Otherwise add matching files.
      result = _.union(result, matches);
    }
  });
  return result;
};
 
// True if the file path exists.
file.exists = function() {
  var filepath = path.join.apply(path, arguments);
  return fs.existsSync(filepath);
};
 
// Return an array of all file paths that match the given wildcard patterns.
file.expand = function() {
  var args = _.toArray(arguments);
  // If the first argument is an options object, save those options to pass
  // into the File.prototype.glob.sync method.
  var options = _.isPlainObject(args[0]) ? args.shift() : {};
  // Use the first argument if it's an Array, otherwise convert the arguments
  // object to an array and use that.
  var patterns = Array.isArray(args[0]) ? args[0] : args;
  // Return empty set if there are no patterns or filepaths.
  if (patterns.length === 0) { return []; }
  // Return all matching filepaths.
  var matches = processPatterns(patterns, function(pattern) {
    // Find all matching files for this pattern.
    return glob.sync(pattern, options);
  });
  // Filter result set?
  if (options.filter) {
    matches = matches.filter(function(filepath) {
      filepath = path.join(options.cwd || '', filepath);
      try {
        if (typeof options.filter === 'function') {
          return options.filter(filepath);
        } else {
          // If the file is of the right type and exists, this should work.
          return fs.statSync(filepath)[options.filter]();
        }
      } catch(e) {
        // Otherwise, it's probably not the right type.
        return false;
      }
    });
  }
  return matches;
};
 
// Build a multi task "files" object dynamically.
file.expandMapping = function(patterns, destBase, options) {
  options = _.defaults({}, options, {
    rename: function(destBase, destPath) {
      return path.join(destBase || '', destPath);
    }
  });
  var files = [];
  var fileByDest = {};
  // Find all files matching pattern, using passed-in options.
  file.expand(options, patterns).forEach(function(src) {
    var destPath = src;
    // Flatten?
    if (options.flatten) {
      destPath = path.basename(destPath);
    }
    // Change the extension?
    if (options.ext) {
      destPath = destPath.replace(/(\.[^\/]*)?$/, options.ext);
    }
    // Generate destination filename.
    var dest = options.rename(destBase, destPath, options);
    // Prepend cwd to src path if necessary.
    if (options.cwd) { src = path.join(options.cwd, src); }
    // Normalize filepaths to be unix-style.
    dest = dest.replace(pathSeparatorRe, '/');
    src = src.replace(pathSeparatorRe, '/');
    // Map correct src path to dest path.
    if (fileByDest[dest]) {
      // If dest already exists, push this src onto that dest's src array.
      fileByDest[dest].src.push(src);
    } else {
      // Otherwise create a new src-dest file mapping object.
      files.push({
        src: [src],
        dest: dest,
      });
      // And store a reference for later use.
      fileByDest[dest] = files[files.length - 1];
    }
  });
  return files;
};
 
// reusing bits of grunt's multi-task source normalization
file.normalizeFilesArray = function(data) {
  var files = [];
 
  data.forEach(function(obj) {
    var prop;
    if ('src' in obj || 'dest' in obj) {
      files.push(obj);
    }
  });
 
  if (files.length === 0) {
    return [];
  }
 
  files = _(files).chain().forEach(function(obj) {
    if (!('src' in obj) || !obj.src) { return; }
    // Normalize .src properties to flattened array.
    if (Array.isArray(obj.src)) {
      obj.src = _.flatten(obj.src);
    } else {
      obj.src = [obj.src];
    }
  }).map(function(obj) {
    // Build options object, removing unwanted properties.
    var expandOptions = _.extend({}, obj);
    delete expandOptions.src;
    delete expandOptions.dest;
 
    // Expand file mappings.
    if (obj.expand) {
      return file.expandMapping(obj.src, obj.dest, expandOptions).map(function(mapObj) {
        // Copy obj properties to result.
        var result = _.extend({}, obj);
        // Make a clone of the orig obj available.
        result.orig = _.extend({}, obj);
        // Set .src and .dest, processing both as templates.
        result.src = mapObj.src;
        result.dest = mapObj.dest;
        // Remove unwanted properties.
        ['expand', 'cwd', 'flatten', 'rename', 'ext'].forEach(function(prop) {
          delete result[prop];
        });
        return result;
      });
    }
 
    // Copy obj properties to result, adding an .orig property.
    var result = _.extend({}, obj);
    // Make a clone of the orig obj available.
    result.orig = _.extend({}, obj);
 
    if ('src' in result) {
      // Expose an expand-on-demand getter method as .src.
      Object.defineProperty(result, 'src', {
        enumerable: true,
        get: function fn() {
          var src;
          if (!('result' in fn)) {
            src = obj.src;
            // If src is an array, flatten it. Otherwise, make it into an array.
            src = Array.isArray(src) ? _.flatten(src) : [src];
            // Expand src files, memoizing result.
            fn.result = file.expand(expandOptions, src);
          }
          return fn.result;
        }
      });
    }
 
    if ('dest' in result) {
      result.dest = obj.dest;
    }
 
    return result;
  }).flatten().value();
 
  return files;
};
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
 
 
 
 
 
 
 
1
1
1
1
1
1
 
1
1
 
1
1
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
1
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/**
 * archiver-utils
 *
 * Copyright (c) 2015 Chris Talkington.
 * Licensed under the MIT license.
 * https://github.com/archiverjs/archiver-utils/blob/master/LICENSE
 */
var fs = require('graceful-fs');
var path = require('path');
var nutil = require('util');
var lazystream = require('lazystream');
var normalizePath = require('normalize-path');
var _ = require('lodash');
 
var Stream = require('stream').Stream;
var PassThrough = require('readable-stream').PassThrough;
 
var utils = module.exports = {};
utils.file = require('./file.js');
 
function assertPath(path) {
  if (typeof path !== 'string') {
    throw new TypeError('Path must be a string. Received ' + nutils.inspect(path));
  }
}
 
utils.collectStream = function(source, callback) {
  var collection = [];
  var size = 0;
 
  source.on('error', callback);
 
  source.on('data', function(chunk) {
    collection.push(chunk);
    size += chunk.length;
  });
 
  source.on('end', function() {
    var buf = new Buffer(size);
    var offset = 0;
 
    collection.forEach(function(data) {
      data.copy(buf, offset);
      offset += data.length;
    });
 
    callback(null, buf);
  });
};
 
utils.dateify = function(dateish) {
  dateish = dateish || new Date();
 
  if (dateish instanceof Date) {
    dateish = dateish;
  } else if (typeof dateish === 'string') {
    dateish = new Date(dateish);
  } else {
    dateish = new Date();
  }
 
  return dateish;
};
 
// this is slightly different from lodash version
utils.defaults = function(object, source, guard) {
  var args = arguments;
  args[0] = args[0] || {};
 
  return _.defaults.apply(_, args);
};
 
utils.isStream = function(source) {
  return source instanceof Stream;
};
 
utils.lazyReadStream = function(filepath) {
  return new lazystream.Readable(function() {
    return fs.createReadStream(filepath);
  });
};
 
utils.normalizeInputSource = function(source) {
  if (source === null) {
    return new Buffer(0);
  } else if (typeof source === 'string') {
    return new Buffer(source);
  } else if (utils.isStream(source) && !source._readableState) {
    var normalized = new PassThrough();
    source.pipe(normalized);
 
    return normalized;
  }
 
  return source;
};
 
utils.sanitizePath = function(filepath) {
  return normalizePath(filepath, false).replace(/^\w+:/, '').replace(/^(\.\.\/|\/)+/, '');
};
 
utils.trailingSlashIt = function(str) {
  return str.slice(-1) !== '/' ? str + '/' : str;
};
 
utils.unixifyPath = function(filepath) {
  return normalizePath(filepath, false).replace(/^\w+:/, '');
};
 
utils.walkdir = function(dirpath, base, callback) {
  var results = [];
 
  if (typeof base === 'function') {
    callback = base;
    base = dirpath;
  }
 
  fs.readdir(dirpath, function(err, list) {
    var i = 0;
    var file;
    var filepath;
 
    if (err) {
      return callback(err);
    }
 
    (function next() {
      file = list[i++];
 
      if (!file) {
        return callback(null, results);
      }
 
      filepath = path.join(dirpath, file);
 
      fs.stat(filepath, function(err, stats) {
        results.push({
          path: filepath,
          relative: path.relative(base, filepath).replace(/\\/g, '/'),
          stats: stats
        });
 
        if (stats && stats.isDirectory()) {
          utils.walkdir(filepath, base, function(err, res) {
            res.forEach(function(dirEntry) {
              results.push(dirEntry);
            });
            next();
          });
        } else {
          next();
        }
      });
    })();
  });
};
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
 
1
 
1
 
1
1
 
 
1
1
 
 
 
1
82
 
 
1
 
 
 
'use strict'
 
var fs = require('fs')
 
module.exports = clone(fs)
 
function clone (obj) {
  Iif (obj === null || typeof obj !== 'object')
    return obj
 
  Eif (obj instanceof Object)
    var copy = { __proto__: obj.__proto__ }
  else
    var copy = Object.create(null)
 
  Object.getOwnPropertyNames(obj).forEach(function (key) {
    Object.defineProperty(copy, key, Object.getOwnPropertyDescriptor(obj, key))
  })
 
  return copy
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
1
1
1
1
 
1
 
1
 
1
1
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
1
1
 
 
112
112
112
 
 
1
 
1
1
1
1
1
1
1
1
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
1
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
1
1
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
1
1
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
1
1
1
 
1
1
1
 
1
1
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
1
1
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
1
 
 
 
 
1
112
112
 
 
 
 
 
 
var fs = require('fs')
var polyfills = require('./polyfills.js')
var legacy = require('./legacy-streams.js')
var queue = []
 
var util = require('util')
 
function noop () {}
 
var debug = noop
Eif (util.debuglog)
  debug = util.debuglog('gfs4')
else if (/\bgfs4\b/i.test(process.env.NODE_DEBUG || ''))
  debug = function() {
    var m = util.format.apply(util, arguments)
    m = 'GFS4: ' + m.split(/\n/).join('\nGFS4: ')
    console.error(m)
  }
 
Iif (/\bgfs4\b/i.test(process.env.NODE_DEBUG || '')) {
  process.on('exit', function() {
    debug(queue)
    require('assert').equal(queue.length, 0)
  })
}
 
module.exports = patch(require('./fs.js'))
Iif (process.env.TEST_GRACEFUL_FS_GLOBAL_PATCH) {
  module.exports = patch(fs)
}
 
// Always patch fs.close/closeSync, because we want to
// retry() whenever a close happens *anywhere* in the program.
// This is essential when multiple graceful-fs instances are
// in play at the same time.
module.exports.close =
fs.close = (function (fs$close) { return function (fd, cb) {
  return fs$close.call(fs, fd, function (err) {
    if (!err)
      retry()
 
    if (typeof cb === 'function')
      cb.apply(this, arguments)
  })
}})(fs.close)
 
module.exports.closeSync =
fs.closeSync = (function (fs$closeSync) { return function (fd) {
  // Note that graceful-fs also retries when fs.closeSync() fails.
  // Looks like a bug to me, although it's probably a harmless one.
  var rval = fs$closeSync.apply(fs, arguments)
  retry()
  return rval
}})(fs.closeSync)
 
function patch (fs) {
  // Everything that references the open() function needs to be in here
  polyfills(fs)
  fs.gracefulify = patch
  fs.FileReadStream = ReadStream;  // Legacy name.
  fs.FileWriteStream = WriteStream;  // Legacy name.
  fs.createReadStream = createReadStream
  fs.createWriteStream = createWriteStream
  var fs$readFile = fs.readFile
  fs.readFile = readFile
  function readFile (path, options, cb) {
    if (typeof options === 'function')
      cb = options, options = null
 
    return go$readFile(path, options, cb)
 
    function go$readFile (path, options, cb) {
      return fs$readFile(path, options, function (err) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$readFile, [path, options, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }
 
  var fs$writeFile = fs.writeFile
  fs.writeFile = writeFile
  function writeFile (path, data, options, cb) {
    if (typeof options === 'function')
      cb = options, options = null
 
    return go$writeFile(path, data, options, cb)
 
    function go$writeFile (path, data, options, cb) {
      return fs$writeFile(path, data, options, function (err) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$writeFile, [path, data, options, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }
 
  var fs$appendFile = fs.appendFile
  Eif (fs$appendFile)
    fs.appendFile = appendFile
  function appendFile (path, data, options, cb) {
    if (typeof options === 'function')
      cb = options, options = null
 
    return go$appendFile(path, data, options, cb)
 
    function go$appendFile (path, data, options, cb) {
      return fs$appendFile(path, data, options, function (err) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$appendFile, [path, data, options, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }
 
  var fs$readdir = fs.readdir
  fs.readdir = readdir
  function readdir (path, cb) {
    return go$readdir(path, cb)
 
    function go$readdir () {
      return fs$readdir(path, function (err, files) {
        if (files && files.sort)
          files.sort();  // Backwards compatibility with graceful-fs.
 
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$readdir, [path, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }
 
 
  Iif (process.version.substr(0, 4) === 'v0.8') {
    var legStreams = legacy(fs)
    ReadStream = legStreams.ReadStream
    WriteStream = legStreams.WriteStream
  }
 
  var fs$ReadStream = fs.ReadStream
  ReadStream.prototype = Object.create(fs$ReadStream.prototype)
  ReadStream.prototype.open = ReadStream$open
 
  var fs$WriteStream = fs.WriteStream
  WriteStream.prototype = Object.create(fs$WriteStream.prototype)
  WriteStream.prototype.open = WriteStream$open
 
  fs.ReadStream = ReadStream
  fs.WriteStream = WriteStream
 
  function ReadStream (path, options) {
    if (this instanceof ReadStream)
      return fs$ReadStream.apply(this, arguments), this
    else
      return ReadStream.apply(Object.create(ReadStream.prototype), arguments)
  }
 
  function ReadStream$open () {
    var that = this
    open(that.path, that.flags, that.mode, function (err, fd) {
      if (err) {
        if (that.autoClose)
          that.destroy()
 
        that.emit('error', err)
      } else {
        that.fd = fd
        that.emit('open', fd)
        that.read()
      }
    })
  }
 
  function WriteStream (path, options) {
    if (this instanceof WriteStream)
      return fs$WriteStream.apply(this, arguments), this
    else
      return WriteStream.apply(Object.create(WriteStream.prototype), arguments)
  }
 
  function WriteStream$open () {
    var that = this
    open(that.path, that.flags, that.mode, function (err, fd) {
      if (err) {
        that.destroy()
        that.emit('error', err)
      } else {
        that.fd = fd
        that.emit('open', fd)
      }
    })
  }
 
  function createReadStream (path, options) {
    return new ReadStream(path, options)
  }
 
  function createWriteStream (path, options) {
    return new WriteStream(path, options)
  }
 
  var fs$open = fs.open
  fs.open = open
  function open (path, flags, mode, cb) {
    if (typeof mode === 'function')
      cb = mode, mode = null
 
    return go$open(path, flags, mode, cb)
 
    function go$open (path, flags, mode, cb) {
      return fs$open(path, flags, mode, function (err, fd) {
        if (err && (err.code === 'EMFILE' || err.code === 'ENFILE'))
          enqueue([go$open, [path, flags, mode, cb]])
        else {
          if (typeof cb === 'function')
            cb.apply(this, arguments)
          retry()
        }
      })
    }
  }
 
  return fs
}
 
function enqueue (elem) {
  debug('ENQUEUE', elem[0].name, elem[1])
  queue.push(elem)
}
 
function retry () {
  var elem = queue.shift()
  Iif (elem) {
    debug('RETRY', elem[0].name, elem[1])
    elem[0].apply(null, elem[1])
  }
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
1
 
1
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
var Stream = require('stream').Stream
 
module.exports = legacy
 
function legacy (fs) {
  return {
    ReadStream: ReadStream,
    WriteStream: WriteStream
  }
 
  function ReadStream (path, options) {
    if (!(this instanceof ReadStream)) return new ReadStream(path, options);
 
    Stream.call(this);
 
    var self = this;
 
    this.path = path;
    this.fd = null;
    this.readable = true;
    this.paused = false;
 
    this.flags = 'r';
    this.mode = 438; /*=0666*/
    this.bufferSize = 64 * 1024;
 
    options = options || {};
 
    // Mixin options into this
    var keys = Object.keys(options);
    for (var index = 0, length = keys.length; index < length; index++) {
      var key = keys[index];
      this[key] = options[key];
    }
 
    if (this.encoding) this.setEncoding(this.encoding);
 
    if (this.start !== undefined) {
      if ('number' !== typeof this.start) {
        throw TypeError('start must be a Number');
      }
      if (this.end === undefined) {
        this.end = Infinity;
      } else if ('number' !== typeof this.end) {
        throw TypeError('end must be a Number');
      }
 
      if (this.start > this.end) {
        throw new Error('start must be <= end');
      }
 
      this.pos = this.start;
    }
 
    if (this.fd !== null) {
      process.nextTick(function() {
        self._read();
      });
      return;
    }
 
    fs.open(this.path, this.flags, this.mode, function (err, fd) {
      if (err) {
        self.emit('error', err);
        self.readable = false;
        return;
      }
 
      self.fd = fd;
      self.emit('open', fd);
      self._read();
    })
  }
 
  function WriteStream (path, options) {
    if (!(this instanceof WriteStream)) return new WriteStream(path, options);
 
    Stream.call(this);
 
    this.path = path;
    this.fd = null;
    this.writable = true;
 
    this.flags = 'w';
    this.encoding = 'binary';
    this.mode = 438; /*=0666*/
    this.bytesWritten = 0;
 
    options = options || {};
 
    // Mixin options into this
    var keys = Object.keys(options);
    for (var index = 0, length = keys.length; index < length; index++) {
      var key = keys[index];
      this[key] = options[key];
    }
 
    if (this.start !== undefined) {
      if ('number' !== typeof this.start) {
        throw TypeError('start must be a Number');
      }
      if (this.start < 0) {
        throw new Error('start must be >= zero');
      }
 
      this.pos = this.start;
    }
 
    this.busy = false;
    this._queue = [];
 
    if (this.fd === null) {
      this._open = fs.open;
      this._queue.push([this._open, this.path, this.flags, this.mode, undefined]);
      this.flush();
    }
  }
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
1
1
 
1
1
1
7
1
7
 
1
1
 
 
1
1
 
 
 
 
1
 
1
 
 
 
 
1
 
 
 
 
 
1
1
 
 
 
 
 
 
 
1
1
1
 
1
1
1
 
1
1
1
 
1
1
1
 
 
1
1
 
 
1
 
1
1
 
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
1
3
2
 
 
 
 
 
 
 
1
3
2
 
 
 
 
 
 
 
 
 
1
3
2
 
 
 
 
 
 
 
1
3
2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
var fs = require('./fs.js')
var constants = require('constants')
 
var origCwd = process.cwd
var cwd = null
process.cwd = function() {
  if (!cwd)
    cwd = origCwd.call(process)
  return cwd
}
try {
  process.cwd()
} catch (er) {}
 
var chdir = process.chdir
process.chdir = function(d) {
  cwd = null
  chdir.call(process, d)
}
 
module.exports = patch
 
function patch (fs) {
  // (re-)implement some things that are known busted or missing.
 
  // lchmod, broken prior to 0.6.2
  // back-port the fix here.
  Iif (constants.hasOwnProperty('O_SYMLINK') &&
      process.version.match(/^v0\.6\.[0-2]|^v0\.5\./)) {
    patchLchmod(fs)
  }
 
  // lutimes implementation, or no-op
  Eif (!fs.lutimes) {
    patchLutimes(fs)
  }
 
  // https://github.com/isaacs/node-graceful-fs/issues/4
  // Chown should not fail on einval or eperm if non-root.
  // It should not fail on enosys ever, as this just indicates
  // that a fs doesn't support the intended operation.
 
  fs.chown = chownFix(fs.chown)
  fs.fchown = chownFix(fs.fchown)
  fs.lchown = chownFix(fs.lchown)
 
  fs.chmod = chmodFix(fs.chmod)
  fs.fchmod = chmodFix(fs.fchmod)
  fs.lchmod = chmodFix(fs.lchmod)
 
  fs.chownSync = chownFixSync(fs.chownSync)
  fs.fchownSync = chownFixSync(fs.fchownSync)
  fs.lchownSync = chownFixSync(fs.lchownSync)
 
  fs.chmodSync = chmodFixSync(fs.chmodSync)
  fs.fchmodSync = chmodFixSync(fs.fchmodSync)
  fs.lchmodSync = chmodFixSync(fs.lchmodSync)
 
  // if lchmod/lchown do not exist, then make them no-ops
  Eif (!fs.lchmod) {
    fs.lchmod = function (path, mode, cb) {
      if (cb) process.nextTick(cb)
    }
    fs.lchmodSync = function () {}
  }
  Eif (!fs.lchown) {
    fs.lchown = function (path, uid, gid, cb) {
      if (cb) process.nextTick(cb)
    }
    fs.lchownSync = function () {}
  }
 
  // on Windows, A/V software can lock the directory, causing this
  // to fail with an EACCES or EPERM if the directory contains newly
  // created files.  Try again on failure, for up to 1 second.
  Iif (process.platform === "win32") {
    fs.rename = (function (fs$rename) { return function (from, to, cb) {
      var start = Date.now()
      fs$rename(from, to, function CB (er) {
        if (er
            && (er.code === "EACCES" || er.code === "EPERM")
            && Date.now() - start < 1000) {
          return fs$rename(from, to, CB)
        }
        if (cb) cb(er)
      })
    }})(fs.rename)
  }
 
  // if read() returns EAGAIN, then just try it again.
  fs.read = (function (fs$read) { return function (fd, buffer, offset, length, position, callback_) {
    var callback
    if (callback_ && typeof callback_ === 'function') {
      var eagCounter = 0
      callback = function (er, _, __) {
        if (er && er.code === 'EAGAIN' && eagCounter < 10) {
          eagCounter ++
          return fs$read.call(fs, fd, buffer, offset, length, position, callback)
        }
        callback_.apply(this, arguments)
      }
    }
    return fs$read.call(fs, fd, buffer, offset, length, position, callback)
  }})(fs.read)
 
  fs.readSync = (function (fs$readSync) { return function (fd, buffer, offset, length, position) {
    var eagCounter = 0
    while (true) {
      try {
        return fs$readSync.call(fs, fd, buffer, offset, length, position)
      } catch (er) {
        if (er.code === 'EAGAIN' && eagCounter < 10) {
          eagCounter ++
          continue
        }
        throw er
      }
    }
  }})(fs.readSync)
}
 
function patchLchmod (fs) {
  fs.lchmod = function (path, mode, callback) {
    fs.open( path
           , constants.O_WRONLY | constants.O_SYMLINK
           , mode
           , function (err, fd) {
      if (err) {
        if (callback) callback(err)
        return
      }
      // prefer to return the chmod error, if one occurs,
      // but still try to close, and report closing errors if they occur.
      fs.fchmod(fd, mode, function (err) {
        fs.close(fd, function(err2) {
          if (callback) callback(err || err2)
        })
      })
    })
  }
 
  fs.lchmodSync = function (path, mode) {
    var fd = fs.openSync(path, constants.O_WRONLY | constants.O_SYMLINK, mode)
 
    // prefer to return the chmod error, if one occurs,
    // but still try to close, and report closing errors if they occur.
    var threw = true
    var ret
    try {
      ret = fs.fchmodSync(fd, mode)
      threw = false
    } finally {
      if (threw) {
        try {
          fs.closeSync(fd)
        } catch (er) {}
      } else {
        fs.closeSync(fd)
      }
    }
    return ret
  }
}
 
function patchLutimes (fs) {
  Iif (constants.hasOwnProperty("O_SYMLINK")) {
    fs.lutimes = function (path, at, mt, cb) {
      fs.open(path, constants.O_SYMLINK, function (er, fd) {
        if (er) {
          if (cb) cb(er)
          return
        }
        fs.futimes(fd, at, mt, function (er) {
          fs.close(fd, function (er2) {
            if (cb) cb(er || er2)
          })
        })
      })
    }
 
    fs.lutimesSync = function (path, at, mt) {
      var fd = fs.openSync(path, constants.O_SYMLINK)
      var ret
      var threw = true
      try {
        ret = fs.futimesSync(fd, at, mt)
        threw = false
      } finally {
        if (threw) {
          try {
            fs.closeSync(fd)
          } catch (er) {}
        } else {
          fs.closeSync(fd)
        }
      }
      return ret
    }
 
  } else {
    fs.lutimes = function (_a, _b, _c, cb) { if (cb) process.nextTick(cb) }
    fs.lutimesSync = function () {}
  }
}
 
function chmodFix (orig) {
  if (!orig) return orig
  return function (target, mode, cb) {
    return orig.call(fs, target, mode, function (er) {
      if (chownErOk(er)) er = null
      if (cb) cb.apply(this, arguments)
    })
  }
}
 
function chmodFixSync (orig) {
  if (!orig) return orig
  return function (target, mode) {
    try {
      return orig.call(fs, target, mode)
    } catch (er) {
      if (!chownErOk(er)) throw er
    }
  }
}
 
 
function chownFix (orig) {
  if (!orig) return orig
  return function (target, uid, gid, cb) {
    return orig.call(fs, target, uid, gid, function (er) {
      if (chownErOk(er)) er = null
      if (cb) cb.apply(this, arguments)
    })
  }
}
 
function chownFixSync (orig) {
  if (!orig) return orig
  return function (target, uid, gid) {
    try {
      return orig.call(fs, target, uid, gid)
    } catch (er) {
      if (!chownErOk(er)) throw er
    }
  }
}
 
// ENOSYS means that the fs doesn't support the op. Just ignore
// that, because it doesn't matter.
//
// if there's no getuid, or if getuid() is something other
// than 0, and the error is EINVAL or EPERM, then just ignore
// it.
//
// This specific case is a silent failure in cp, install, tar,
// and most other unix tools that manage permissions.
//
// When running as root, or if other types of errors are
// encountered, then it's strict.
function chownErOk (er) {
  if (!er)
    return true
 
  if (er.code === "ENOSYS")
    return true
 
  var nonroot = !process.getuid || process.getuid() !== 0
  if (nonroot) {
    if (er.code === "EINVAL" || er.code === "EPERM")
      return true
  }
 
  return false
}
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
1
1
 
1
 
 
 
 
1
1
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
var util = require('util');
var PassThrough = require('readable-stream/passthrough');
 
module.exports = {
  Readable: Readable,
  Writable: Writable
};
 
util.inherits(Readable, PassThrough);
util.inherits(Writable, PassThrough);
 
// Patch the given method of instance so that the callback
// is executed once, before the actual method is called the
// first time.
function beforeFirstCall(instance, method, callback) {
  instance[method] = function() {
    delete instance[method];
    callback.apply(this, arguments);
    return this[method].apply(this, arguments);
  };
}
 
function Readable(fn, options) {
  if (!(this instanceof Readable))
    return new Readable(fn, options);
 
  PassThrough.call(this, options);
 
  beforeFirstCall(this, '_read', function() {
    var source = fn.call(this, options);
    var emit = this.emit.bind(this, 'error');
    source.on('error', emit);
    source.pipe(this);
  });
 
  this.emit('readable');
}
 
function Writable(fn, options) {
  if (!(this instanceof Writable))
    return new Writable(fn, options);
 
  PassThrough.call(this, options);
 
  beforeFirstCall(this, '_write', function() {
    var destination = fn.call(this, options);
    var emit = this.emit.bind(this, 'error');
    destination.on('error', emit);
    this.pipe(destination);
  });
 
  this.emit('writable');
}
 
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
/*!
 * normalize-path <https://github.com/jonschlinkert/normalize-path>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License
 */
 
module.exports = function normalizePath(str, stripTrailing) {
  if (typeof str !== 'string') {
    throw new TypeError('expected a string');
  }
  str = str.replace(/[\\\/]+/g, '/');
  if (stripTrailing !== false) {
    str = str.replace(/\/$/, '');
  }
  return str;
};
 
 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
1
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
1
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
1
 
 
1
 
 
1
 
 
1
 
 
1
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
10
 
 
10
10
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
1
2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
 
 
 
 
 
1
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
1
 
 
1
 
 
 
 
 
 
1
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
1
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
12
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
4
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
3
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
3
 
 
 
1
 
 
1
 
 
1
 
 
1
 
 
1
 
 
1
 
 
1
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
1
1
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
1
1
 
1
 
 
 
1
2
 
 
 
 
 
 
1
 
1
1
 
 
 
 
 
 
1
 
 
 
 
 
1
 
 
 
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
1
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
1
 
 
 
1
 
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
7
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
1
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
1
1
 
 
 
 
 
 
1
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
 
 
 
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
    typeof define === 'function' && define.amd ? define(['exports'], factory) :
    (factory((global.async = global.async || {})));
}(this, function (exports) { 'use strict';
 
    /**
     * A faster alternative to `Function#apply`, this function invokes `func`
     * with the `this` binding of `thisArg` and the arguments of `args`.
     *
     * @private
     * @param {Function} func The function to invoke.
     * @param {*} thisArg The `this` binding of `func`.
     * @param {Array} args The arguments to invoke `func` with.
     * @returns {*} Returns the result of `func`.
     */
    function apply(func, thisArg, args) {
      var length = args.length;
      switch (length) {
        case 0: return func.call(thisArg);
        case 1: return func.call(thisArg, args[0]);
        case 2: return func.call(thisArg, args[0], args[1]);
        case 3: return func.call(thisArg, args[0], args[1], args[2]);
      }
      return func.apply(thisArg, args);
    }
 
    /**
     * Checks if `value` is the
     * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)
     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
     * @example
     *
     * _.isObject({});
     * // => true
     *
     * _.isObject([1, 2, 3]);
     * // => true
     *
     * _.isObject(_.noop);
     * // => true
     *
     * _.isObject(null);
     * // => false
     */
    function isObject(value) {
      var type = typeof value;
      return !!value && (type == 'object' || type == 'function');
    }
 
    var funcTag = '[object Function]';
    var genTag = '[object GeneratorFunction]';
    /** Used for built-in method references. */
    var objectProto = Object.prototype;
 
    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
     * of values.
     */
    var objectToString = objectProto.toString;
 
    /**
     * Checks if `value` is classified as a `Function` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified,
     *  else `false`.
     * @example
     *
     * _.isFunction(_);
     * // => true
     *
     * _.isFunction(/abc/);
     * // => false
     */
    function isFunction(value) {
      // The use of `Object#toString` avoids issues with the `typeof` operator
      // in Safari 8 which returns 'object' for typed array and weak map constructors,
      // and PhantomJS 1.9 which returns 'function' for `NodeList` instances.
      var tag = isObject(value) ? objectToString.call(value) : '';
      return tag == funcTag || tag == genTag;
    }
 
    /**
     * Checks if `value` is object-like. A value is object-like if it's not `null`
     * and has a `typeof` result of "object".
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
     * @example
     *
     * _.isObjectLike({});
     * // => true
     *
     * _.isObjectLike([1, 2, 3]);
     * // => true
     *
     * _.isObjectLike(_.noop);
     * // => false
     *
     * _.isObjectLike(null);
     * // => false
     */
    function isObjectLike(value) {
      return !!value && typeof value == 'object';
    }
 
    /** `Object#toString` result references. */
    var symbolTag = '[object Symbol]';
 
    /** Used for built-in method references. */
    var objectProto$1 = Object.prototype;
 
    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
     * of values.
     */
    var objectToString$1 = objectProto$1.toString;
 
    /**
     * Checks if `value` is classified as a `Symbol` primitive or object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified,
     *  else `false`.
     * @example
     *
     * _.isSymbol(Symbol.iterator);
     * // => true
     *
     * _.isSymbol('abc');
     * // => false
     */
    function isSymbol(value) {
      return typeof value == 'symbol' ||
        (isObjectLike(value) && objectToString$1.call(value) == symbolTag);
    }
 
    /** Used as references for various `Number` constants. */
    var NAN = 0 / 0;
 
    /** Used to match leading and trailing whitespace. */
    var reTrim = /^\s+|\s+$/g;
 
    /** Used to detect bad signed hexadecimal string values. */
    var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
 
    /** Used to detect binary string values. */
    var reIsBinary = /^0b[01]+$/i;
 
    /** Used to detect octal string values. */
    var reIsOctal = /^0o[0-7]+$/i;
 
    /** Built-in method references without a dependency on `root`. */
    var freeParseInt = parseInt;
 
    /**
     * Converts `value` to a number.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to process.
     * @returns {number} Returns the number.
     * @example
     *
     * _.toNumber(3.2);
     * // => 3.2
     *
     * _.toNumber(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toNumber(Infinity);
     * // => Infinity
     *
     * _.toNumber('3.2');
     * // => 3.2
     */
    function toNumber(value) {
      if (typeof value == 'number') {
        return value;
      }
      if (isSymbol(value)) {
        return NAN;
      }
      if (isObject(value)) {
        var other = isFunction(value.valueOf) ? value.valueOf() : value;
        value = isObject(other) ? (other + '') : other;
      }
      if (typeof value != 'string') {
        return value === 0 ? value : +value;
      }
      value = value.replace(reTrim, '');
      var isBinary = reIsBinary.test(value);
      return (isBinary || reIsOctal.test(value))
        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
        : (reIsBadHex.test(value) ? NAN : +value);
    }
 
    var INFINITY = 1 / 0;
    var MAX_INTEGER = 1.7976931348623157e+308;
    /**
     * Converts `value` to a finite number.
     *
     * @static
     * @memberOf _
     * @since 4.12.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted number.
     * @example
     *
     * _.toFinite(3.2);
     * // => 3.2
     *
     * _.toFinite(Number.MIN_VALUE);
     * // => 5e-324
     *
     * _.toFinite(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toFinite('3.2');
     * // => 3.2
     */
    function toFinite(value) {
      if (!value) {
        return value === 0 ? value : 0;
      }
      value = toNumber(value);
      if (value === INFINITY || value === -INFINITY) {
        var sign = (value < 0 ? -1 : 1);
        return sign * MAX_INTEGER;
      }
      return value === value ? value : 0;
    }
 
    /**
     * Converts `value` to an integer.
     *
     * **Note:** This method is loosely based on
     * [`ToInteger`](http://www.ecma-international.org/ecma-262/6.0/#sec-tointeger).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to convert.
     * @returns {number} Returns the converted integer.
     * @example
     *
     * _.toInteger(3.2);
     * // => 3
     *
     * _.toInteger(Number.MIN_VALUE);
     * // => 0
     *
     * _.toInteger(Infinity);
     * // => 1.7976931348623157e+308
     *
     * _.toInteger('3.2');
     * // => 3
     */
    function toInteger(value) {
      var result = toFinite(value),
          remainder = result % 1;
 
      return result === result ? (remainder ? result - remainder : result) : 0;
    }
 
    /** Used as the `TypeError` message for "Functions" methods. */
    var FUNC_ERROR_TEXT = 'Expected a function';
 
    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeMax = Math.max;
 
    /**
     * Creates a function that invokes `func` with the `this` binding of the
     * created function and arguments from `start` and beyond provided as
     * an array.
     *
     * **Note:** This method is based on the
     * [rest parameter](https://mdn.io/rest_parameters).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Function
     * @param {Function} func The function to apply a rest parameter to.
     * @param {number} [start=func.length-1] The start position of the rest parameter.
     * @returns {Function} Returns the new function.
     * @example
     *
     * var say = _.rest(function(what, names) {
     *   return what + ' ' + _.initial(names).join(', ') +
     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
     * });
     *
     * say('hello', 'fred', 'barney', 'pebbles');
     * // => 'hello fred, barney, & pebbles'
     */
    function rest(func, start) {
      Iif (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT);
      }
      start = nativeMax(start === undefined ? (func.length - 1) : toInteger(start), 0);
      return function() {
        var args = arguments,
            index = -1,
            length = nativeMax(args.length - start, 0),
            array = Array(length);
 
        while (++index < length) {
          array[index] = args[start + index];
        }
        switch (start) {
          case 0: return func.call(this, array);
          case 1: return func.call(this, args[0], array);
          case 2: return func.call(this, args[0], args[1], array);
        }
        var otherArgs = Array(start + 1);
        index = -1;
        while (++index < start) {
          otherArgs[index] = args[index];
        }
        otherArgs[start] = array;
        return apply(func, this, otherArgs);
      };
    }
 
    function initialParams (fn) {
        return rest(function (args /*..., callback*/) {
            var callback = args.pop();
            fn.call(this, args, callback);
        });
    }
 
    function applyEach$1(eachfn) {
        return rest(function (fns, args) {
            var go = initialParams(function (args, callback) {
                var that = this;
                return eachfn(fns, function (fn, cb) {
                    fn.apply(that, args.concat([cb]));
                }, callback);
            });
            if (args.length) {
                return go.apply(this, args);
            } else {
                return go;
            }
        });
    }
 
    /**
     * The base implementation of `_.property` without support for deep paths.
     *
     * @private
     * @param {string} key The key of the property to get.
     * @returns {Function} Returns the new accessor function.
     */
    function baseProperty(key) {
      return function(object) {
        return object == null ? undefined : object[key];
      };
    }
 
    /**
     * Gets the "length" property value of `object`.
     *
     * **Note:** This function is used to avoid a
     * [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792) that affects
     * Safari on at least iOS 8.1-8.3 ARM64.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {*} Returns the "length" value.
     */
    var getLength = baseProperty('length');
 
    /** Used as references for various `Number` constants. */
    var MAX_SAFE_INTEGER = 9007199254740991;
 
    /**
     * Checks if `value` is a valid array-like length.
     *
     * **Note:** This function is loosely based on
     * [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a valid length,
     *  else `false`.
     * @example
     *
     * _.isLength(3);
     * // => true
     *
     * _.isLength(Number.MIN_VALUE);
     * // => false
     *
     * _.isLength(Infinity);
     * // => false
     *
     * _.isLength('3');
     * // => false
     */
    function isLength(value) {
      return typeof value == 'number' &&
        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
    }
 
    /**
     * Checks if `value` is array-like. A value is considered array-like if it's
     * not a function and has a `value.length` that's an integer greater than or
     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
     * @example
     *
     * _.isArrayLike([1, 2, 3]);
     * // => true
     *
     * _.isArrayLike(document.body.children);
     * // => true
     *
     * _.isArrayLike('abc');
     * // => true
     *
     * _.isArrayLike(_.noop);
     * // => false
     */
    function isArrayLike(value) {
      return value != null && isLength(getLength(value)) && !isFunction(value);
    }
 
    /**
     * A method that returns `undefined`.
     *
     * @static
     * @memberOf _
     * @since 2.3.0
     * @category Util
     * @example
     *
     * _.times(2, _.noop);
     * // => [undefined, undefined]
     */
    function noop() {
      // No operation performed.
    }
 
    function once(fn) {
        return function () {
            if (fn === null) return;
            var callFn = fn;
            fn = null;
            callFn.apply(this, arguments);
        };
    }
 
    var iteratorSymbol = typeof Symbol === 'function' && Symbol.iterator;
 
    function getIterator (coll) {
        return iteratorSymbol && coll[iteratorSymbol] && coll[iteratorSymbol]();
    }
 
    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeGetPrototype = Object.getPrototypeOf;
 
    /**
     * Gets the `[[Prototype]]` of `value`.
     *
     * @private
     * @param {*} value The value to query.
     * @returns {null|Object} Returns the `[[Prototype]]`.
     */
    function getPrototype(value) {
      return nativeGetPrototype(Object(value));
    }
 
    /** Used for built-in method references. */
    var objectProto$2 = Object.prototype;
 
    /** Used to check objects for own properties. */
    var hasOwnProperty = objectProto$2.hasOwnProperty;
 
    /**
     * The base implementation of `_.has` without support for deep paths.
     *
     * @private
     * @param {Object} [object] The object to query.
     * @param {Array|string} key The key to check.
     * @returns {boolean} Returns `true` if `key` exists, else `false`.
     */
    function baseHas(object, key) {
      // Avoid a bug in IE 10-11 where objects with a [[Prototype]] of `null`,
      // that are composed entirely of index properties, return `false` for
      // `hasOwnProperty` checks of them.
      return object != null &&
        (hasOwnProperty.call(object, key) ||
          (typeof object == 'object' && key in object && getPrototype(object) === null));
    }
 
    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeKeys = Object.keys;
 
    /**
     * The base implementation of `_.keys` which doesn't skip the constructor
     * property of prototypes or treat sparse arrays as dense.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     */
    function baseKeys(object) {
      return nativeKeys(Object(object));
    }
 
    /**
     * The base implementation of `_.times` without support for iteratee shorthands
     * or max array length checks.
     *
     * @private
     * @param {number} n The number of times to invoke `iteratee`.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the array of results.
     */
    function baseTimes(n, iteratee) {
      var index = -1,
          result = Array(n);
 
      while (++index < n) {
        result[index] = iteratee(index);
      }
      return result;
    }
 
    /**
     * This method is like `_.isArrayLike` except that it also checks if `value`
     * is an object.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is an array-like object,
     *  else `false`.
     * @example
     *
     * _.isArrayLikeObject([1, 2, 3]);
     * // => true
     *
     * _.isArrayLikeObject(document.body.children);
     * // => true
     *
     * _.isArrayLikeObject('abc');
     * // => false
     *
     * _.isArrayLikeObject(_.noop);
     * // => false
     */
    function isArrayLikeObject(value) {
      return isObjectLike(value) && isArrayLike(value);
    }
 
    /** `Object#toString` result references. */
    var argsTag = '[object Arguments]';
 
    /** Used for built-in method references. */
    var objectProto$3 = Object.prototype;
 
    /** Used to check objects for own properties. */
    var hasOwnProperty$1 = objectProto$3.hasOwnProperty;
 
    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
     * of values.
     */
    var objectToString$2 = objectProto$3.toString;
 
    /** Built-in value references. */
    var propertyIsEnumerable = objectProto$3.propertyIsEnumerable;
 
    /**
     * Checks if `value` is likely an `arguments` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified,
     *  else `false`.
     * @example
     *
     * _.isArguments(function() { return arguments; }());
     * // => true
     *
     * _.isArguments([1, 2, 3]);
     * // => false
     */
    function isArguments(value) {
      // Safari 8.1 incorrectly makes `arguments.callee` enumerable in strict mode.
      return isArrayLikeObject(value) && hasOwnProperty$1.call(value, 'callee') &&
        (!propertyIsEnumerable.call(value, 'callee') || objectToString$2.call(value) == argsTag);
    }
 
    /**
     * Checks if `value` is classified as an `Array` object.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @type {Function}
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified,
     *  else `false`.
     * @example
     *
     * _.isArray([1, 2, 3]);
     * // => true
     *
     * _.isArray(document.body.children);
     * // => false
     *
     * _.isArray('abc');
     * // => false
     *
     * _.isArray(_.noop);
     * // => false
     */
    var isArray = Array.isArray;
 
    /** `Object#toString` result references. */
    var stringTag = '[object String]';
 
    /** Used for built-in method references. */
    var objectProto$4 = Object.prototype;
 
    /**
     * Used to resolve the
     * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
     * of values.
     */
    var objectToString$3 = objectProto$4.toString;
 
    /**
     * Checks if `value` is classified as a `String` primitive or object.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Lang
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is correctly classified,
     *  else `false`.
     * @example
     *
     * _.isString('abc');
     * // => true
     *
     * _.isString(1);
     * // => false
     */
    function isString(value) {
      return typeof value == 'string' ||
        (!isArray(value) && isObjectLike(value) && objectToString$3.call(value) == stringTag);
    }
 
    /**
     * Creates an array of index keys for `object` values of arrays,
     * `arguments` objects, and strings, otherwise `null` is returned.
     *
     * @private
     * @param {Object} object The object to query.
     * @returns {Array|null} Returns index keys, else `null`.
     */
    function indexKeys(object) {
      var length = object ? object.length : undefined;
      if (isLength(length) &&
          (isArray(object) || isString(object) || isArguments(object))) {
        return baseTimes(length, String);
      }
      return null;
    }
 
    /** Used as references for various `Number` constants. */
    var MAX_SAFE_INTEGER$1 = 9007199254740991;
 
    /** Used to detect unsigned integer values. */
    var reIsUint = /^(?:0|[1-9]\d*)$/;
 
    /**
     * Checks if `value` is a valid array-like index.
     *
     * @private
     * @param {*} value The value to check.
     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
     */
    function isIndex(value, length) {
      length = length == null ? MAX_SAFE_INTEGER$1 : length;
      return !!length &&
        (typeof value == 'number' || reIsUint.test(value)) &&
        (value > -1 && value % 1 == 0 && value < length);
    }
 
    /** Used for built-in method references. */
    var objectProto$5 = Object.prototype;
 
    /**
     * Checks if `value` is likely a prototype object.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
     */
    function isPrototype(value) {
      var Ctor = value && value.constructor,
          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto$5;
 
      return value === proto;
    }
 
    /**
     * Creates an array of the own enumerable property names of `object`.
     *
     * **Note:** Non-object values are coerced to objects. See the
     * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)
     * for more details.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Object
     * @param {Object} object The object to query.
     * @returns {Array} Returns the array of property names.
     * @example
     *
     * function Foo() {
     *   this.a = 1;
     *   this.b = 2;
     * }
     *
     * Foo.prototype.c = 3;
     *
     * _.keys(new Foo);
     * // => ['a', 'b'] (iteration order is not guaranteed)
     *
     * _.keys('hi');
     * // => ['0', '1']
     */
    function keys(object) {
      var isProto = isPrototype(object);
      if (!(isProto || isArrayLike(object))) {
        return baseKeys(object);
      }
      var indexes = indexKeys(object),
          skipIndexes = !!indexes,
          result = indexes || [],
          length = result.length;
 
      for (var key in object) {
        if (baseHas(object, key) &&
            !(skipIndexes && (key == 'length' || isIndex(key, length))) &&
            !(isProto && key == 'constructor')) {
          result.push(key);
        }
      }
      return result;
    }
 
    function createArrayIterator(coll) {
        var i = -1;
        var len = coll.length;
        return function next() {
            return ++i < len ? { value: coll[i], key: i } : null;
        };
    }
 
    function createES2015Iterator(iterator) {
        var i = -1;
        return function next() {
            var item = iterator.next();
            if (item.done) return null;
            i++;
            return { value: item.value, key: i };
        };
    }
 
    function createObjectIterator(obj) {
        var okeys = keys(obj);
        var i = -1;
        var len = okeys.length;
        return function next() {
            var key = okeys[++i];
            return i < len ? { value: obj[key], key: key } : null;
        };
    }
 
    function iterator(coll) {
        if (isArrayLike(coll)) {
            return createArrayIterator(coll);
        }
 
        var iterator = getIterator(coll);
        return iterator ? createES2015Iterator(iterator) : createObjectIterator(coll);
    }
 
    function onlyOnce(fn) {
        return function () {
            if (fn === null) throw new Error("Callback was already called.");
            var callFn = fn;
            fn = null;
            callFn.apply(this, arguments);
        };
    }
 
    function _eachOfLimit(limit) {
        return function (obj, iteratee, callback) {
            callback = once(callback || noop);
            if (limit <= 0 || !obj) {
                return callback(null);
            }
            var nextElem = iterator(obj);
            var done = false;
            var running = 0;
 
            function iterateeCallback(err) {
                running -= 1;
                if (err) {
                    done = true;
                    callback(err);
                } else if (done && running <= 0) {
                    return callback(null);
                } else {
                    replenish();
                }
            }
 
            function replenish() {
                while (running < limit && !done) {
                    var elem = nextElem();
                    if (elem === null) {
                        done = true;
                        if (running <= 0) {
                            callback(null);
                        }
                        return;
                    }
                    running += 1;
                    iteratee(elem.value, elem.key, onlyOnce(iterateeCallback));
                }
            }
 
            replenish();
        };
    }
 
    /**
     * The same as [`eachOf`]{@link module:Collections.eachOf} but runs a maximum of `limit` async operations at a
     * time.
     *
     * @name eachOfLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.eachOf]{@link module:Collections.eachOf}
     * @alias forEachOfLimit
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A function to apply to each
     * item in `coll`. The `key` is the item's key, or index in the case of an
     * array. The iteratee is passed a `callback(err)` which must be called once it
     * has completed. If no error has occurred, the callback should be run without
     * arguments or with an explicit `null` argument. Invoked with
     * (item, key, callback).
     * @param {Function} [callback] - A callback which is called when all
     * `iteratee` functions have finished, or an error occurs. Invoked with (err).
     */
    function eachOfLimit(coll, limit, iteratee, callback) {
      _eachOfLimit(limit)(coll, iteratee, callback);
    }
 
    function doLimit(fn, limit) {
        return function (iterable, iteratee, callback) {
            return fn(iterable, limit, iteratee, callback);
        };
    }
 
    /** Used as the `TypeError` message for "Functions" methods. */
    var FUNC_ERROR_TEXT$1 = 'Expected a function';
 
    /**
     * Creates a function that invokes `func`, with the `this` binding and arguments
     * of the created function, while it's called less than `n` times. Subsequent
     * calls to the created function return the result of the last `func` invocation.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category Function
     * @param {number} n The number of calls at which `func` is no longer invoked.
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * jQuery(element).on('click', _.before(5, addContactToList));
     * // => allows adding up to 4 contacts to the list
     */
    function before(n, func) {
      var result;
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT$1);
      }
      n = toInteger(n);
      return function() {
        if (--n > 0) {
          result = func.apply(this, arguments);
        }
        if (n <= 1) {
          func = undefined;
        }
        return result;
      };
    }
 
    /**
     * Creates a function that is restricted to invoking `func` once. Repeat calls
     * to the function return the value of the first invocation. The `func` is
     * invoked with the `this` binding and arguments of the created function.
     *
     * @static
     * @memberOf _
     * @since 0.1.0
     * @category Function
     * @param {Function} func The function to restrict.
     * @returns {Function} Returns the new restricted function.
     * @example
     *
     * var initialize = _.once(createApplication);
     * initialize();
     * initialize();
     * // `initialize` invokes `createApplication` once
     */
    function once$1(func) {
      return before(2, func);
    }
 
    // eachOf implementation optimized for array-likes
    function eachOfArrayLike(coll, iteratee, callback) {
        callback = once$1(callback || noop);
        var index = 0,
            completed = 0,
            length = coll.length;
        if (length === 0) {
            callback(null);
        }
 
        function iteratorCallback(err) {
            if (err) {
                callback(err);
            } else if (++completed === length) {
                callback(null);
            }
        }
 
        for (; index < length; index++) {
            iteratee(coll[index], index, onlyOnce(iteratorCallback));
        }
    }
 
    // a generic version of eachOf which can handle array, object, and iterator cases.
    var eachOfGeneric = doLimit(eachOfLimit, Infinity);
 
    /**
     * Like [`each`]{@link module:Collections.each}, except that it passes the key (or index) as the second argument
     * to the iteratee.
     *
     * @name eachOf
     * @static
     * @memberOf module:Collections
     * @method
     * @alias forEachOf
     * @category Collection
     * @see [async.each]{@link module:Collections.each}
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each
     * item in `coll`. The `key` is the item's key, or index in the case of an
     * array. The iteratee is passed a `callback(err)` which must be called once it
     * has completed. If no error has occurred, the callback should be run without
     * arguments or with an explicit `null` argument. Invoked with
     * (item, key, callback).
     * @param {Function} [callback] - A callback which is called when all
     * `iteratee` functions have finished, or an error occurs. Invoked with (err).
     * @example
     *
     * var obj = {dev: "/dev.json", test: "/test.json", prod: "/prod.json"};
     * var configs = {};
     *
     * async.forEachOf(obj, function (value, key, callback) {
     *     fs.readFile(__dirname + value, "utf8", function (err, data) {
     *         if (err) return callback(err);
     *         try {
     *             configs[key] = JSON.parse(data);
     *         } catch (e) {
     *             return callback(e);
     *         }
     *         callback();
     *     });
     * }, function (err) {
     *     if (err) console.error(err.message);
     *     // configs is now a map of JSON data
     *     doSomethingWith(configs);
     * });
     */
    function eachOf (coll, iteratee, callback) {
        var eachOfImplementation = isArrayLike(coll) ? eachOfArrayLike : eachOfGeneric;
        eachOfImplementation(coll, iteratee, callback);
    }
 
    function doParallel(fn) {
        return function (obj, iteratee, callback) {
            return fn(eachOf, obj, iteratee, callback);
        };
    }
 
    function _asyncMap(eachfn, arr, iteratee, callback) {
        callback = once(callback || noop);
        arr = arr || [];
        var results = [];
        var counter = 0;
 
        eachfn(arr, function (value, _, callback) {
            var index = counter++;
            iteratee(value, function (err, v) {
                results[index] = v;
                callback(err);
            });
        }, function (err) {
            callback(err, results);
        });
    }
 
    /**
     * Produces a new collection of values by mapping each value in `coll` through
     * the `iteratee` function. The `iteratee` is called with an item from `coll`
     * and a callback for when it has finished processing. Each of these callback
     * takes 2 arguments: an `error`, and the transformed item from `coll`. If
     * `iteratee` passes an error to its callback, the main `callback` (for the
     * `map` function) is immediately called with the error.
     *
     * Note, that since this function applies the `iteratee` to each item in
     * parallel, there is no guarantee that the `iteratee` functions will complete
     * in order. However, the results array will be in the same order as the
     * original `coll`.
     *
     * If `map` is passed an Object, the results will be an Array.  The results
     * will roughly be in the order of the original Objects' keys (but this can
     * vary across JavaScript engines)
     *
     * @name map
     * @static
     * @memberOf module:Collections
     * @method
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, transformed)` which must be called
     * once it has completed with an error (which can be `null`) and a
     * transformed item. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called when all `iteratee`
     * functions have finished, or an error occurs. Results is an Array of the
     * transformed items from the `coll`. Invoked with (err, results).
     * @example
     *
     * async.map(['file1','file2','file3'], fs.stat, function(err, results) {
     *     // results is now an array of stats for each file
     * });
     */
    var map = doParallel(_asyncMap);
 
    /**
     * Applies the provided arguments to each function in the array, calling
     * `callback` after all functions have completed. If you only provide the first
     * argument, then it will return a function which lets you pass in the
     * arguments as if it were a single function call.
     *
     * @name applyEach
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Array|Iterable|Object} fns - A collection of asynchronous functions to all
     * call with the same arguments
     * @param {...*} [args] - any number of separate arguments to pass to the
     * function.
     * @param {Function} [callback] - the final argument should be the callback,
     * called when all functions have completed processing.
     * @returns {Function} - If only the first argument is provided, it will return
     * a function which lets you pass in the arguments as if it were a single
     * function call.
     * @example
     *
     * async.applyEach([enableSearch, updateSchema], 'bucket', callback);
     *
     * // partial application example:
     * async.each(
     *     buckets,
     *     async.applyEach([enableSearch, updateSchema]),
     *     callback
     * );
     */
    var applyEach = applyEach$1(map);
 
    function doParallelLimit(fn) {
        return function (obj, limit, iteratee, callback) {
            return fn(_eachOfLimit(limit), obj, iteratee, callback);
        };
    }
 
    /**
     * The same as [`map`]{@link module:Collections.map} but runs a maximum of `limit` async operations at a time.
     *
     * @name mapLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.map]{@link module:Collections.map}
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A function to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, transformed)` which must be called
     * once it has completed with an error (which can be `null`) and a transformed
     * item. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called when all `iteratee`
     * functions have finished, or an error occurs. Results is an array of the
     * transformed items from the `coll`. Invoked with (err, results).
     */
    var mapLimit = doParallelLimit(_asyncMap);
 
    /**
     * The same as [`map`]{@link module:Collections.map} but runs only a single async operation at a time.
     *
     * @name mapSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.map]{@link module:Collections.map}
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, transformed)` which must be called
     * once it has completed with an error (which can be `null`) and a
     * transformed item. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called when all `iteratee`
     * functions have finished, or an error occurs. Results is an array of the
     * transformed items from the `coll`. Invoked with (err, results).
     */
    var mapSeries = doLimit(mapLimit, 1);
 
    /**
     * The same as [`applyEach`]{@link module:ControlFlow.applyEach} but runs only a single async operation at a time.
     *
     * @name applyEachSeries
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.applyEach]{@link module:ControlFlow.applyEach}
     * @category Control Flow
     * @param {Array|Iterable|Object} fns - A collection of asynchronous functions to all
     * call with the same arguments
     * @param {...*} [args] - any number of separate arguments to pass to the
     * function.
     * @param {Function} [callback] - the final argument should be the callback,
     * called when all functions have completed processing.
     * @returns {Function} - If only the first argument is provided, it will return
     * a function which lets you pass in the arguments as if it were a single
     * function call.
     */
    var applyEachSeries = applyEach$1(mapSeries);
 
    /**
     * Creates a continuation function with some arguments already applied.
     *
     * Useful as a shorthand when combined with other control flow functions. Any
     * arguments passed to the returned function are added to the arguments
     * originally passed to apply.
     *
     * @name apply
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {Function} function - The function you want to eventually apply all
     * arguments to. Invokes with (arguments...).
     * @param {...*} arguments... - Any number of arguments to automatically apply
     * when the continuation is called.
     * @example
     *
     * // using apply
     * async.parallel([
     *     async.apply(fs.writeFile, 'testfile1', 'test1'),
     *     async.apply(fs.writeFile, 'testfile2', 'test2')
     * ]);
     *
     *
     * // the same process without using apply
     * async.parallel([
     *     function(callback) {
     *         fs.writeFile('testfile1', 'test1', callback);
     *     },
     *     function(callback) {
     *         fs.writeFile('testfile2', 'test2', callback);
     *     }
     * ]);
     *
     * // It's possible to pass any number of additional arguments when calling the
     * // continuation:
     *
     * node> var fn = async.apply(sys.puts, 'one');
     * node> fn('two', 'three');
     * one
     * two
     * three
     */
    var apply$1 = rest(function (fn, args) {
        return rest(function (callArgs) {
            return fn.apply(null, args.concat(callArgs));
        });
    });
 
    /**
     * Take a sync function and make it async, passing its return value to a
     * callback. This is useful for plugging sync functions into a waterfall,
     * series, or other async functions. Any arguments passed to the generated
     * function will be passed to the wrapped function (except for the final
     * callback argument). Errors thrown will be passed to the callback.
     *
     * If the function passed to `asyncify` returns a Promise, that promises's
     * resolved/rejected state will be used to call the callback, rather than simply
     * the synchronous return value.
     *
     * This also means you can asyncify ES2016 `async` functions.
     *
     * @name asyncify
     * @static
     * @memberOf module:Utils
     * @method
     * @alias wrapSync
     * @category Util
     * @param {Function} func - The synchronous function to convert to an
     * asynchronous function.
     * @returns {Function} An asynchronous wrapper of the `func`. To be invoked with
     * (callback).
     * @example
     *
     * // passing a regular synchronous function
     * async.waterfall([
     *     async.apply(fs.readFile, filename, "utf8"),
     *     async.asyncify(JSON.parse),
     *     function (data, next) {
     *         // data is the result of parsing the text.
     *         // If there was a parsing error, it would have been caught.
     *     }
     * ], callback);
     *
     * // passing a function returning a promise
     * async.waterfall([
     *     async.apply(fs.readFile, filename, "utf8"),
     *     async.asyncify(function (contents) {
     *         return db.model.create(contents);
     *     }),
     *     function (model, next) {
     *         // `model` is the instantiated model object.
     *         // If there was an error, this function would be skipped.
     *     }
     * ], callback);
     *
     * // es6 example
     * var q = async.queue(async.asyncify(async function(file) {
     *     var intermediateStep = await processFile(file);
     *     return await somePromise(intermediateStep)
     * }));
     *
     * q.push(files);
     */
    function asyncify(func) {
        return initialParams(function (args, callback) {
            var result;
            try {
                result = func.apply(this, args);
            } catch (e) {
                return callback(e);
            }
            // if result is Promise object
            if (isObject(result) && typeof result.then === 'function') {
                result.then(function (value) {
                    callback(null, value);
                }, function (err) {
                    callback(err.message ? err : new Error(err));
                });
            } else {
                callback(null, result);
            }
        });
    }
 
    /**
     * A specialized version of `_.forEach` for arrays without support for
     * iteratee shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns `array`.
     */
    function arrayEach(array, iteratee) {
      var index = -1,
          length = array ? array.length : 0;
 
      while (++index < length) {
        if (iteratee(array[index], index, array) === false) {
          break;
        }
      }
      return array;
    }
 
    /**
     * Creates a base function for methods like `_.forIn` and `_.forOwn`.
     *
     * @private
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Function} Returns the new base function.
     */
    function createBaseFor(fromRight) {
      return function(object, iteratee, keysFunc) {
        var index = -1,
            iterable = Object(object),
            props = keysFunc(object),
            length = props.length;
 
        while (length--) {
          var key = props[fromRight ? length : ++index];
          if (iteratee(iterable[key], key, iterable) === false) {
            break;
          }
        }
        return object;
      };
    }
 
    /**
     * The base implementation of `baseForOwn` which iterates over `object`
     * properties returned by `keysFunc` and invokes `iteratee` for each property.
     * Iteratee functions may exit iteration early by explicitly returning `false`.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @param {Function} keysFunc The function to get the keys of `object`.
     * @returns {Object} Returns `object`.
     */
    var baseFor = createBaseFor();
 
    /**
     * The base implementation of `_.forOwn` without support for iteratee shorthands.
     *
     * @private
     * @param {Object} object The object to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Object} Returns `object`.
     */
    function baseForOwn(object, iteratee) {
      return object && baseFor(object, iteratee, keys);
    }
 
    /**
     * Gets the index at which the first occurrence of `NaN` is found in `array`.
     *
     * @private
     * @param {Array} array The array to search.
     * @param {number} fromIndex The index to search from.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {number} Returns the index of the matched `NaN`, else `-1`.
     */
    function indexOfNaN(array, fromIndex, fromRight) {
      var length = array.length,
          index = fromIndex + (fromRight ? 1 : -1);
 
      while ((fromRight ? index-- : ++index < length)) {
        var other = array[index];
        if (other !== other) {
          return index;
        }
      }
      return -1;
    }
 
    /**
     * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
     *
     * @private
     * @param {Array} array The array to search.
     * @param {*} value The value to search for.
     * @param {number} fromIndex The index to search from.
     * @returns {number} Returns the index of the matched value, else `-1`.
     */
    function baseIndexOf(array, value, fromIndex) {
      if (value !== value) {
        return indexOfNaN(array, fromIndex);
      }
      var index = fromIndex - 1,
          length = array.length;
 
      while (++index < length) {
        if (array[index] === value) {
          return index;
        }
      }
      return -1;
    }
 
    /**
     * Determines the best order for running the functions in `tasks`, based on
     * their requirements. Each function can optionally depend on other functions
     * being completed first, and each function is run as soon as its requirements
     * are satisfied.
     *
     * If any of the functions pass an error to their callback, the `auto` sequence
     * will stop. Further tasks will not execute (so any other functions depending
     * on it will not run), and the main `callback` is immediately called with the
     * error.
     *
     * Functions also receive an object containing the results of functions which
     * have completed so far as the first argument, if they have dependencies. If a
     * task function has no dependencies, it will only be passed a callback.
     *
     * @name auto
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Object} tasks - An object. Each of its properties is either a
     * function or an array of requirements, with the function itself the last item
     * in the array. The object's key of a property serves as the name of the task
     * defined by that property, i.e. can be used when specifying requirements for
     * other tasks. The function receives one or two arguments:
     * * a `results` object, containing the results of the previously executed
     *   functions, only passed if the task has any dependencies,
     * * a `callback(err, result)` function, which must be called when finished,
     *   passing an `error` (which can be `null`) and the result of the function's
     *   execution.
     * @param {number} [concurrency=Infinity] - An optional `integer` for
     * determining the maximum number of tasks that can be run in parallel. By
     * default, as many as possible.
     * @param {Function} [callback] - An optional callback which is called when all
     * the tasks have been completed. It receives the `err` argument if any `tasks`
     * pass an error to their callback. Results are always returned; however, if an
     * error occurs, no further `tasks` will be performed, and the results object
     * will only contain partial results. Invoked with (err, results).
     * @returns undefined
     * @example
     *
     * async.auto({
     *     // this function will just be passed a callback
     *     readData: async.apply(fs.readFile, 'data.txt', 'utf-8'),
     *     showData: ['readData', function(results, cb) {
     *         // results.readData is the file's contents
     *         // ...
     *     }]
     * }, callback);
     *
     * async.auto({
     *     get_data: function(callback) {
     *         console.log('in get_data');
     *         // async code to get some data
     *         callback(null, 'data', 'converted to array');
     *     },
     *     make_folder: function(callback) {
     *         console.log('in make_folder');
     *         // async code to create a directory to store a file in
     *         // this is run at the same time as getting the data
     *         callback(null, 'folder');
     *     },
     *     write_file: ['get_data', 'make_folder', function(results, callback) {
     *         console.log('in write_file', JSON.stringify(results));
     *         // once there is some data and the directory exists,
     *         // write the data to a file in the directory
     *         callback(null, 'filename');
     *     }],
     *     email_link: ['write_file', function(results, callback) {
     *         console.log('in email_link', JSON.stringify(results));
     *         // once the file is written let's email a link to it...
     *         // results.write_file contains the filename returned by write_file.
     *         callback(null, {'file':results.write_file, 'email':'user@example.com'});
     *     }]
     * }, function(err, results) {
     *     console.log('err = ', err);
     *     console.log('results = ', results);
     * });
     */
    function auto (tasks, concurrency, callback) {
        if (typeof concurrency === 'function') {
            // concurrency is optional, shift the args.
            callback = concurrency;
            concurrency = null;
        }
        callback = once(callback || noop);
        var keys$$ = keys(tasks);
        var numTasks = keys$$.length;
        if (!numTasks) {
            return callback(null);
        }
        if (!concurrency) {
            concurrency = numTasks;
        }
 
        var results = {};
        var runningTasks = 0;
        var hasError = false;
 
        var listeners = {};
 
        var readyTasks = [];
 
        // for cycle detection:
        var readyToCheck = []; // tasks that have been identified as reachable
        // without the possibility of returning to an ancestor task
        var uncheckedDependencies = {};
 
        baseForOwn(tasks, function (task, key) {
            if (!isArray(task)) {
                // no dependencies
                enqueueTask(key, [task]);
                readyToCheck.push(key);
                return;
            }
 
            var dependencies = task.slice(0, task.length - 1);
            var remainingDependencies = dependencies.length;
            if (remainingDependencies === 0) {
                enqueueTask(key, task);
                readyToCheck.push(key);
                return;
            }
            uncheckedDependencies[key] = remainingDependencies;
 
            arrayEach(dependencies, function (dependencyName) {
                if (!tasks[dependencyName]) {
                    throw new Error('async.auto task `' + key + '` has a non-existent dependency in ' + dependencies.join(', '));
                }
                addListener(dependencyName, function () {
                    remainingDependencies--;
                    if (remainingDependencies === 0) {
                        enqueueTask(key, task);
                    }
                });
            });
        });
 
        checkForDeadlocks();
        processQueue();
 
        function enqueueTask(key, task) {
            readyTasks.push(function () {
                runTask(key, task);
            });
        }
 
        function processQueue() {
            if (readyTasks.length === 0 && runningTasks === 0) {
                return callback(null, results);
            }
            while (readyTasks.length && runningTasks < concurrency) {
                var run = readyTasks.shift();
                run();
            }
        }
 
        function addListener(taskName, fn) {
            var taskListeners = listeners[taskName];
            if (!taskListeners) {
                taskListeners = listeners[taskName] = [];
            }
 
            taskListeners.push(fn);
        }
 
        function taskComplete(taskName) {
            var taskListeners = listeners[taskName] || [];
            arrayEach(taskListeners, function (fn) {
                fn();
            });
            processQueue();
        }
 
        function runTask(key, task) {
            if (hasError) return;
 
            var taskCallback = onlyOnce(rest(function (err, args) {
                runningTasks--;
                if (args.length <= 1) {
                    args = args[0];
                }
                if (err) {
                    var safeResults = {};
                    baseForOwn(results, function (val, rkey) {
                        safeResults[rkey] = val;
                    });
                    safeResults[key] = args;
                    hasError = true;
                    listeners = [];
 
                    callback(err, safeResults);
                } else {
                    results[key] = args;
                    taskComplete(key);
                }
            }));
 
            runningTasks++;
            var taskFn = task[task.length - 1];
            if (task.length > 1) {
                taskFn(results, taskCallback);
            } else {
                taskFn(taskCallback);
            }
        }
 
        function checkForDeadlocks() {
            // Kahn's algorithm
            // https://en.wikipedia.org/wiki/Topological_sorting#Kahn.27s_algorithm
            // http://connalle.blogspot.com/2013/10/topological-sortingkahn-algorithm.html
            var currentTask;
            var counter = 0;
            while (readyToCheck.length) {
                currentTask = readyToCheck.pop();
                counter++;
                arrayEach(getDependents(currentTask), function (dependent) {
                    if (--uncheckedDependencies[dependent] === 0) {
                        readyToCheck.push(dependent);
                    }
                });
            }
 
            if (counter !== numTasks) {
                throw new Error('async.auto cannot execute tasks due to a recursive dependency');
            }
        }
 
        function getDependents(taskName) {
            var result = [];
            baseForOwn(tasks, function (task, key) {
                if (isArray(task) && baseIndexOf(task, taskName, 0) >= 0) {
                    result.push(key);
                }
            });
            return result;
        }
    }
 
    /**
     * A specialized version of `_.map` for arrays without support for iteratee
     * shorthands.
     *
     * @private
     * @param {Array} [array] The array to iterate over.
     * @param {Function} iteratee The function invoked per iteration.
     * @returns {Array} Returns the new mapped array.
     */
    function arrayMap(array, iteratee) {
      var index = -1,
          length = array ? array.length : 0,
          result = Array(length);
 
      while (++index < length) {
        result[index] = iteratee(array[index], index, array);
      }
      return result;
    }
 
    /**
     * Copies the values of `source` to `array`.
     *
     * @private
     * @param {Array} source The array to copy values from.
     * @param {Array} [array=[]] The array to copy values to.
     * @returns {Array} Returns `array`.
     */
    function copyArray(source, array) {
      var index = -1,
          length = source.length;
 
      array || (array = Array(length));
      while (++index < length) {
        array[index] = source[index];
      }
      return array;
    }
 
    /**
     * Checks if `value` is a global object.
     *
     * @private
     * @param {*} value The value to check.
     * @returns {null|Object} Returns `value` if it's a global object, else `null`.
     */
    function checkGlobal(value) {
      return (value && value.Object === Object) ? value : null;
    }
 
    /** Detect free variable `global` from Node.js. */
    var freeGlobal = checkGlobal(typeof global == 'object' && global);
 
    /** Detect free variable `self`. */
    var freeSelf = checkGlobal(typeof self == 'object' && self);
 
    /** Detect `this` as the global object. */
    var thisGlobal = checkGlobal(typeof this == 'object' && this);
 
    /** Used as a reference to the global object. */
    var root = freeGlobal || freeSelf || thisGlobal || Function('return this')();
 
    /** Built-in value references. */
    var Symbol$1 = root.Symbol;
 
    /** Used as references for various `Number` constants. */
    var INFINITY$1 = 1 / 0;
 
    /** Used to convert symbols to primitives and strings. */
    var symbolProto = Symbol$1 ? Symbol$1.prototype : undefined;
    var symbolToString = symbolProto ? symbolProto.toString : undefined;
    /**
     * The base implementation of `_.toString` which doesn't convert nullish
     * values to empty strings.
     *
     * @private
     * @param {*} value The value to process.
     * @returns {string} Returns the string.
     */
    function baseToString(value) {
      // Exit early for strings to avoid a performance hit in some environments.
      if (typeof value == 'string') {
        return value;
      }
      if (isSymbol(value)) {
        return symbolToString ? symbolToString.call(value) : '';
      }
      var result = (value + '');
      return (result == '0' && (1 / value) == -INFINITY$1) ? '-0' : result;
    }
 
    /**
     * The base implementation of `_.slice` without an iteratee call guard.
     *
     * @private
     * @param {Array} array The array to slice.
     * @param {number} [start=0] The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the slice of `array`.
     */
    function baseSlice(array, start, end) {
      var index = -1,
          length = array.length;
 
      if (start < 0) {
        start = -start > length ? 0 : (length + start);
      }
      end = end > length ? length : end;
      if (end < 0) {
        end += length;
      }
      length = start > end ? 0 : ((end - start) >>> 0);
      start >>>= 0;
 
      var result = Array(length);
      while (++index < length) {
        result[index] = array[index + start];
      }
      return result;
    }
 
    /**
     * Casts `array` to a slice if it's needed.
     *
     * @private
     * @param {Array} array The array to inspect.
     * @param {number} start The start position.
     * @param {number} [end=array.length] The end position.
     * @returns {Array} Returns the cast slice.
     */
    function castSlice(array, start, end) {
      var length = array.length;
      end = end === undefined ? length : end;
      return (!start && end >= length) ? array : baseSlice(array, start, end);
    }
 
    /**
     * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
     * that is not found in the character symbols.
     *
     * @private
     * @param {Array} strSymbols The string symbols to inspect.
     * @param {Array} chrSymbols The character symbols to find.
     * @returns {number} Returns the index of the last unmatched string symbol.
     */
    function charsEndIndex(strSymbols, chrSymbols) {
      var index = strSymbols.length;
 
      while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
      return index;
    }
 
    /**
     * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
     * that is not found in the character symbols.
     *
     * @private
     * @param {Array} strSymbols The string symbols to inspect.
     * @param {Array} chrSymbols The character symbols to find.
     * @returns {number} Returns the index of the first unmatched string symbol.
     */
    function charsStartIndex(strSymbols, chrSymbols) {
      var index = -1,
          length = strSymbols.length;
 
      while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
      return index;
    }
 
    /** Used to compose unicode character classes. */
    var rsAstralRange = '\\ud800-\\udfff';
    var rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23';
    var rsComboSymbolsRange = '\\u20d0-\\u20f0';
    var rsVarRange = '\\ufe0e\\ufe0f';
    var rsAstral = '[' + rsAstralRange + ']';
    var rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']';
    var rsFitz = '\\ud83c[\\udffb-\\udfff]';
    var rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')';
    var rsNonAstral = '[^' + rsAstralRange + ']';
    var rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}';
    var rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]';
    var rsZWJ = '\\u200d';
    var reOptMod = rsModifier + '?';
    var rsOptVar = '[' + rsVarRange + ']?';
    var rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*';
    var rsSeq = rsOptVar + reOptMod + rsOptJoin;
    var rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
    /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
    var reComplexSymbol = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
 
    /**
     * Converts `string` to an array.
     *
     * @private
     * @param {string} string The string to convert.
     * @returns {Array} Returns the converted array.
     */
    function stringToArray(string) {
      return string.match(reComplexSymbol);
    }
 
    /**
     * Converts `value` to a string. An empty string is returned for `null`
     * and `undefined` values. The sign of `-0` is preserved.
     *
     * @static
     * @memberOf _
     * @since 4.0.0
     * @category Lang
     * @param {*} value The value to process.
     * @returns {string} Returns the string.
     * @example
     *
     * _.toString(null);
     * // => ''
     *
     * _.toString(-0);
     * // => '-0'
     *
     * _.toString([1, 2, 3]);
     * // => '1,2,3'
     */
    function toString(value) {
      return value == null ? '' : baseToString(value);
    }
 
    /** Used to match leading and trailing whitespace. */
    var reTrim$1 = /^\s+|\s+$/g;
 
    /**
     * Removes leading and trailing whitespace or specified characters from `string`.
     *
     * @static
     * @memberOf _
     * @since 3.0.0
     * @category String
     * @param {string} [string=''] The string to trim.
     * @param {string} [chars=whitespace] The characters to trim.
     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
     * @returns {string} Returns the trimmed string.
     * @example
     *
     * _.trim('  abc  ');
     * // => 'abc'
     *
     * _.trim('-_-abc-_-', '_-');
     * // => 'abc'
     *
     * _.map(['  foo  ', '  bar  '], _.trim);
     * // => ['foo', 'bar']
     */
    function trim(string, chars, guard) {
      string = toString(string);
      if (string && (guard || chars === undefined)) {
        return string.replace(reTrim$1, '');
      }
      if (!string || !(chars = baseToString(chars))) {
        return string;
      }
      var strSymbols = stringToArray(string),
          chrSymbols = stringToArray(chars),
          start = charsStartIndex(strSymbols, chrSymbols),
          end = charsEndIndex(strSymbols, chrSymbols) + 1;
 
      return castSlice(strSymbols, start, end).join('');
    }
 
    var FN_ARGS = /^(function)?\s*[^\(]*\(\s*([^\)]*)\)/m;
    var FN_ARG_SPLIT = /,/;
    var FN_ARG = /(=.+)?(\s*)$/;
    var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
 
    function parseParams(func) {
        func = func.toString().replace(STRIP_COMMENTS, '');
        func = func.match(FN_ARGS)[2].replace(' ', '');
        func = func ? func.split(FN_ARG_SPLIT) : [];
        func = func.map(function (arg) {
            return trim(arg.replace(FN_ARG, ''));
        });
        return func;
    }
 
    /**
     * A dependency-injected version of the [async.auto]{@link module:ControlFlow.auto} function. Dependent
     * tasks are specified as parameters to the function, after the usual callback
     * parameter, with the parameter names matching the names of the tasks it
     * depends on. This can provide even more readable task graphs which can be
     * easier to maintain.
     *
     * If a final callback is specified, the task results are similarly injected,
     * specified as named parameters after the initial error parameter.
     *
     * The autoInject function is purely syntactic sugar and its semantics are
     * otherwise equivalent to [async.auto]{@link module:ControlFlow.auto}.
     *
     * @name autoInject
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.auto]{@link module:ControlFlow.auto}
     * @category Control Flow
     * @param {Object} tasks - An object, each of whose properties is a function of
     * the form 'func([dependencies...], callback). The object's key of a property
     * serves as the name of the task defined by that property, i.e. can be used
     * when specifying requirements for other tasks.
     * * The `callback` parameter is a `callback(err, result)` which must be called
     *   when finished, passing an `error` (which can be `null`) and the result of
     *   the function's execution. The remaining parameters name other tasks on
     *   which the task is dependent, and the results from those tasks are the
     *   arguments of those parameters.
     * @param {Function} [callback] - An optional callback which is called when all
     * the tasks have been completed. It receives the `err` argument if any `tasks`
     * pass an error to their callback, and a `results` object with any completed
     * task results, similar to `auto`.
     * @example
     *
     * //  The example from `auto` can be rewritten as follows:
     * async.autoInject({
     *     get_data: function(callback) {
     *         // async code to get some data
     *         callback(null, 'data', 'converted to array');
     *     },
     *     make_folder: function(callback) {
     *         // async code to create a directory to store a file in
     *         // this is run at the same time as getting the data
     *         callback(null, 'folder');
     *     },
     *     write_file: function(get_data, make_folder, callback) {
     *         // once there is some data and the directory exists,
     *         // write the data to a file in the directory
     *         callback(null, 'filename');
     *     },
     *     email_link: function(write_file, callback) {
     *         // once the file is written let's email a link to it...
     *         // write_file contains the filename returned by write_file.
     *         callback(null, {'file':write_file, 'email':'user@example.com'});
     *     }
     * }, function(err, results) {
     *     console.log('err = ', err);
     *     console.log('email_link = ', results.email_link);
     * });
     *
     * // If you are using a JS minifier that mangles parameter names, `autoInject`
     * // will not work with plain functions, since the parameter names will be
     * // collapsed to a single letter identifier.  To work around this, you can
     * // explicitly specify the names of the parameters your task function needs
     * // in an array, similar to Angular.js dependency injection.
     *
     * // This still has an advantage over plain `auto`, since the results a task
     * // depends on are still spread into arguments.
     * async.autoInject({
     *     //...
     *     write_file: ['get_data', 'make_folder', function(get_data, make_folder, callback) {
     *         callback(null, 'filename');
     *     }],
     *     email_link: ['write_file', function(write_file, callback) {
     *         callback(null, {'file':write_file, 'email':'user@example.com'});
     *     }]
     *     //...
     * }, function(err, results) {
     *     console.log('err = ', err);
     *     console.log('email_link = ', results.email_link);
     * });
     */
    function autoInject(tasks, callback) {
        var newTasks = {};
 
        baseForOwn(tasks, function (taskFn, key) {
            var params;
 
            if (isArray(taskFn)) {
                params = copyArray(taskFn);
                taskFn = params.pop();
 
                newTasks[key] = params.concat(params.length > 0 ? newTask : taskFn);
            } else if (taskFn.length === 1) {
                // no dependencies, use the function as-is
                newTasks[key] = taskFn;
            } else {
                params = parseParams(taskFn);
                if (taskFn.length === 0 && params.length === 0) {
                    throw new Error("autoInject task functions require explicit parameters.");
                }
 
                params.pop();
 
                newTasks[key] = params.concat(newTask);
            }
 
            function newTask(results, taskCb) {
                var newArgs = arrayMap(params, function (name) {
                    return results[name];
                });
                newArgs.push(taskCb);
                taskFn.apply(null, newArgs);
            }
        });
 
        auto(newTasks, callback);
    }
 
    var hasSetImmediate = typeof setImmediate === 'function' && setImmediate;
    var hasNextTick = typeof process === 'object' && typeof process.nextTick === 'function';
 
    function fallback(fn) {
        setTimeout(fn, 0);
    }
 
    function wrap(defer) {
        return rest(function (fn, args) {
            defer(function () {
                fn.apply(null, args);
            });
        });
    }
 
    var _defer;
 
    Eif (hasSetImmediate) {
        _defer = setImmediate;
    } else if (hasNextTick) {
        _defer = process.nextTick;
    } else {
        _defer = fallback;
    }
 
    var setImmediate$1 = wrap(_defer);
 
    // Simple doubly linked list (https://en.wikipedia.org/wiki/Doubly_linked_list) implementation
    // used for queues. This implementation assumes that the node provided by the user can be modified
    // to adjust the next and last properties. We implement only the minimal functionality
    // for queue support.
    function DLL() {
        this.head = this.tail = null;
        this.length = 0;
    }
 
    function setInitial(dll, node) {
        dll.length = 1;
        dll.head = dll.tail = node;
    }
 
    DLL.prototype.removeLink = function (node) {
        if (node.prev) node.prev.next = node.next;else this.head = node.next;
        if (node.next) node.next.prev = node.prev;else this.tail = node.prev;
 
        node.prev = node.next = null;
        this.length -= 1;
        return node;
    };
 
    DLL.prototype.empty = DLL;
 
    DLL.prototype.insertAfter = function (node, newNode) {
        newNode.prev = node;
        newNode.next = node.next;
        if (node.next) node.next.prev = newNode;else this.tail = newNode;
        node.next = newNode;
        this.length += 1;
    };
 
    DLL.prototype.insertBefore = function (node, newNode) {
        newNode.prev = node.prev;
        newNode.next = node;
        if (node.prev) node.prev.next = newNode;else this.head = newNode;
        node.prev = newNode;
        this.length += 1;
    };
 
    DLL.prototype.unshift = function (node) {
        if (this.head) this.insertBefore(this.head, node);else setInitial(this, node);
    };
 
    DLL.prototype.push = function (node) {
        if (this.tail) this.insertAfter(this.tail, node);else setInitial(this, node);
    };
 
    DLL.prototype.shift = function () {
        return this.head && this.removeLink(this.head);
    };
 
    DLL.prototype.pop = function () {
        return this.tail && this.removeLink(this.tail);
    };
 
    function queue(worker, concurrency, payload) {
        if (concurrency == null) {
            concurrency = 1;
        } else if (concurrency === 0) {
            throw new Error('Concurrency must not be zero');
        }
 
        function _insert(data, insertAtFront, callback) {
            if (callback != null && typeof callback !== 'function') {
                throw new Error('task callback must be a function');
            }
            q.started = true;
            if (!isArray(data)) {
                data = [data];
            }
            if (data.length === 0 && q.idle()) {
                // call drain immediately if there are no tasks
                return setImmediate$1(function () {
                    q.drain();
                });
            }
            arrayEach(data, function (task) {
                var item = {
                    data: task,
                    callback: callback || noop
                };
 
                if (insertAtFront) {
                    q._tasks.unshift(item);
                } else {
                    q._tasks.push(item);
                }
            });
            setImmediate$1(q.process);
        }
 
        function _next(tasks) {
            return rest(function (args) {
                workers -= 1;
 
                arrayEach(tasks, function (task) {
                    arrayEach(workersList, function (worker, index) {
                        if (worker === task) {
                            workersList.splice(index, 1);
                            return false;
                        }
                    });
 
                    task.callback.apply(task, args);
 
                    if (args[0] != null) {
                        q.error(args[0], task.data);
                    }
                });
 
                if (workers <= q.concurrency - q.buffer) {
                    q.unsaturated();
                }
 
                if (q.idle()) {
                    q.drain();
                }
                q.process();
            });
        }
 
        var workers = 0;
        var workersList = [];
        var q = {
            _tasks: new DLL(),
            concurrency: concurrency,
            payload: payload,
            saturated: noop,
            unsaturated: noop,
            buffer: concurrency / 4,
            empty: noop,
            drain: noop,
            error: noop,
            started: false,
            paused: false,
            push: function (data, callback) {
                _insert(data, false, callback);
            },
            kill: function () {
                q.drain = noop;
                q._tasks.empty();
            },
            unshift: function (data, callback) {
                _insert(data, true, callback);
            },
            process: function () {
                while (!q.paused && workers < q.concurrency && q._tasks.length) {
                    var tasks = [],
                        data = [];
                    var l = q._tasks.length;
                    if (q.payload) l = Math.min(l, q.payload);
                    for (var i = 0; i < l; i++) {
                        var node = q._tasks.shift();
                        tasks.push(node);
                        data.push(node.data);
                    }
 
                    if (q._tasks.length === 0) {
                        q.empty();
                    }
                    workers += 1;
                    workersList.push(tasks[0]);
 
                    if (workers === q.concurrency) {
                        q.saturated();
                    }
 
                    var cb = onlyOnce(_next(tasks));
                    worker(data, cb);
                }
            },
            length: function () {
                return q._tasks.length;
            },
            running: function () {
                return workers;
            },
            workersList: function () {
                return workersList;
            },
            idle: function () {
                return q._tasks.length + workers === 0;
            },
            pause: function () {
                q.paused = true;
            },
            resume: function () {
                if (q.paused === false) {
                    return;
                }
                q.paused = false;
                var resumeCount = Math.min(q.concurrency, q._tasks.length);
                // Need to call q.process once per concurrent
                // worker to preserve full concurrency after pause
                for (var w = 1; w <= resumeCount; w++) {
                    setImmediate$1(q.process);
                }
            }
        };
        return q;
    }
 
    /**
     * A cargo of tasks for the worker function to complete. Cargo inherits all of
     * the same methods and event callbacks as [`queue`]{@link module:ControlFlow.queue}.
     * @typedef {Object} CargoObject
     * @memberOf module:ControlFlow
     * @property {Function} length - A function returning the number of items
     * waiting to be processed. Invoke like `cargo.length()`.
     * @property {number} payload - An `integer` for determining how many tasks
     * should be process per round. This property can be changed after a `cargo` is
     * created to alter the payload on-the-fly.
     * @property {Function} push - Adds `task` to the `queue`. The callback is
     * called once the `worker` has finished processing the task. Instead of a
     * single task, an array of `tasks` can be submitted. The respective callback is
     * used for every task in the list. Invoke like `cargo.push(task, [callback])`.
     * @property {Function} saturated - A callback that is called when the
     * `queue.length()` hits the concurrency and further tasks will be queued.
     * @property {Function} empty - A callback that is called when the last item
     * from the `queue` is given to a `worker`.
     * @property {Function} drain - A callback that is called when the last item
     * from the `queue` has returned from the `worker`.
     * @property {Function} idle - a function returning false if there are items
     * waiting or being processed, or true if not. Invoke like `cargo.idle()`.
     * @property {Function} pause - a function that pauses the processing of tasks
     * until `resume()` is called. Invoke like `cargo.pause()`.
     * @property {Function} resume - a function that resumes the processing of
     * queued tasks when the queue is paused. Invoke like `cargo.resume()`.
     * @property {Function} kill - a function that removes the `drain` callback and
     * empties remaining tasks from the queue forcing it to go idle. Invoke like `cargo.kill()`.
     */
 
    /**
     * Creates a `cargo` object with the specified payload. Tasks added to the
     * cargo will be processed altogether (up to the `payload` limit). If the
     * `worker` is in progress, the task is queued until it becomes available. Once
     * the `worker` has completed some tasks, each callback of those tasks is
     * called. Check out [these](https://camo.githubusercontent.com/6bbd36f4cf5b35a0f11a96dcd2e97711ffc2fb37/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313637363837312f36383130382f62626330636662302d356632392d313165322d393734662d3333393763363464633835382e676966) [animations](https://camo.githubusercontent.com/f4810e00e1c5f5f8addbe3e9f49064fd5d102699/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313637363837312f36383130312f38346339323036362d356632392d313165322d383134662d3964336430323431336266642e676966)
     * for how `cargo` and `queue` work.
     *
     * While [`queue`]{@link module:ControlFlow.queue} passes only one task to one of a group of workers
     * at a time, cargo passes an array of tasks to a single worker, repeating
     * when the worker is finished.
     *
     * @name cargo
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.queue]{@link module:ControlFlow.queue}
     * @category Control Flow
     * @param {Function} worker - An asynchronous function for processing an array
     * of queued tasks, which must call its `callback(err)` argument when finished,
     * with an optional `err` argument. Invoked with `(tasks, callback)`.
     * @param {number} [payload=Infinity] - An optional `integer` for determining
     * how many tasks should be processed per round; if omitted, the default is
     * unlimited.
     * @returns {module:ControlFlow.CargoObject} A cargo object to manage the tasks. Callbacks can
     * attached as certain properties to listen for specific events during the
     * lifecycle of the cargo and inner queue.
     * @example
     *
     * // create a cargo object with payload 2
     * var cargo = async.cargo(function(tasks, callback) {
     *     for (var i=0; i<tasks.length; i++) {
     *         console.log('hello ' + tasks[i].name);
     *     }
     *     callback();
     * }, 2);
     *
     * // add some items
     * cargo.push({name: 'foo'}, function(err) {
     *     console.log('finished processing foo');
     * });
     * cargo.push({name: 'bar'}, function(err) {
     *     console.log('finished processing bar');
     * });
     * cargo.push({name: 'baz'}, function(err) {
     *     console.log('finished processing baz');
     * });
     */
    function cargo(worker, payload) {
      return queue(worker, 1, payload);
    }
 
    /**
     * The same as [`eachOf`]{@link module:Collections.eachOf} but runs only a single async operation at a time.
     *
     * @name eachOfSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.eachOf]{@link module:Collections.eachOf}
     * @alias forEachOfSeries
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each item in `coll`. The
     * `key` is the item's key, or index in the case of an array. The iteratee is
     * passed a `callback(err)` which must be called once it has completed. If no
     * error has occurred, the callback should be run without arguments or with an
     * explicit `null` argument. Invoked with (item, key, callback).
     * @param {Function} [callback] - A callback which is called when all `iteratee`
     * functions have finished, or an error occurs. Invoked with (err).
     */
    var eachOfSeries = doLimit(eachOfLimit, 1);
 
    /**
     * Reduces `coll` into a single value using an async `iteratee` to return each
     * successive step. `memo` is the initial state of the reduction. This function
     * only operates in series.
     *
     * For performance reasons, it may make sense to split a call to this function
     * into a parallel map, and then use the normal `Array.prototype.reduce` on the
     * results. This function is for situations where each step in the reduction
     * needs to be async; if you can get the data before reducing it, then it's
     * probably a good idea to do so.
     *
     * @name reduce
     * @static
     * @memberOf module:Collections
     * @method
     * @alias inject
     * @alias foldl
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {*} memo - The initial state of the reduction.
     * @param {Function} iteratee - A function applied to each item in the
     * array to produce the next step in the reduction. The `iteratee` is passed a
     * `callback(err, reduction)` which accepts an optional error as its first
     * argument, and the state of the reduction as the second. If an error is
     * passed to the callback, the reduction is stopped and the main `callback` is
     * immediately called with the error. Invoked with (memo, item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Result is the reduced value. Invoked with
     * (err, result).
     * @example
     *
     * async.reduce([1,2,3], 0, function(memo, item, callback) {
     *     // pointless async:
     *     process.nextTick(function() {
     *         callback(null, memo + item)
     *     });
     * }, function(err, result) {
     *     // result is now equal to the last value of memo, which is 6
     * });
     */
    function reduce(coll, memo, iteratee, callback) {
        callback = once(callback || noop);
        eachOfSeries(coll, function (x, i, callback) {
            iteratee(memo, x, function (err, v) {
                memo = v;
                callback(err);
            });
        }, function (err) {
            callback(err, memo);
        });
    }
 
    /**
     * Version of the compose function that is more natural to read. Each function
     * consumes the return value of the previous function. It is the equivalent of
     * [compose]{@link module:ControlFlow.compose} with the arguments reversed.
     *
     * Each function is executed with the `this` binding of the composed function.
     *
     * @name seq
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.compose]{@link module:ControlFlow.compose}
     * @category Control Flow
     * @param {...Function} functions - the asynchronous functions to compose
     * @returns {Function} a function that composes the `functions` in order
     * @example
     *
     * // Requires lodash (or underscore), express3 and dresende's orm2.
     * // Part of an app, that fetches cats of the logged user.
     * // This example uses `seq` function to avoid overnesting and error
     * // handling clutter.
     * app.get('/cats', function(request, response) {
     *     var User = request.models.User;
     *     async.seq(
     *         _.bind(User.get, User),  // 'User.get' has signature (id, callback(err, data))
     *         function(user, fn) {
     *             user.getCats(fn);      // 'getCats' has signature (callback(err, data))
     *         }
     *     )(req.session.user_id, function (err, cats) {
     *         if (err) {
     *             console.error(err);
     *             response.json({ status: 'error', message: err.message });
     *         } else {
     *             response.json({ status: 'ok', message: 'Cats found', data: cats });
     *         }
     *     });
     * });
     */
    var seq = rest(function seq(functions) {
        return rest(function (args) {
            var that = this;
 
            var cb = args[args.length - 1];
            if (typeof cb == 'function') {
                args.pop();
            } else {
                cb = noop;
            }
 
            reduce(functions, args, function (newargs, fn, cb) {
                fn.apply(that, newargs.concat([rest(function (err, nextargs) {
                    cb(err, nextargs);
                })]));
            }, function (err, results) {
                cb.apply(that, [err].concat(results));
            });
        });
    });
 
    /**
     * Creates a function which is a composition of the passed asynchronous
     * functions. Each function consumes the return value of the function that
     * follows. Composing functions `f()`, `g()`, and `h()` would produce the result
     * of `f(g(h()))`, only this version uses callbacks to obtain the return values.
     *
     * Each function is executed with the `this` binding of the composed function.
     *
     * @name compose
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {...Function} functions - the asynchronous functions to compose
     * @returns {Function} an asynchronous function that is the composed
     * asynchronous `functions`
     * @example
     *
     * function add1(n, callback) {
     *     setTimeout(function () {
     *         callback(null, n + 1);
     *     }, 10);
     * }
     *
     * function mul3(n, callback) {
     *     setTimeout(function () {
     *         callback(null, n * 3);
     *     }, 10);
     * }
     *
     * var add1mul3 = async.compose(mul3, add1);
     * add1mul3(4, function (err, result) {
     *     // result now equals 15
     * });
     */
    var compose = rest(function (args) {
      return seq.apply(null, args.reverse());
    });
 
    function concat$1(eachfn, arr, fn, callback) {
        var result = [];
        eachfn(arr, function (x, index, cb) {
            fn(x, function (err, y) {
                result = result.concat(y || []);
                cb(err);
            });
        }, function (err) {
            callback(err, result);
        });
    }
 
    /**
     * Applies `iteratee` to each item in `coll`, concatenating the results. Returns
     * the concatenated list. The `iteratee`s are called in parallel, and the
     * results are concatenated as they return. There is no guarantee that the
     * results array will be returned in the original order of `coll` passed to the
     * `iteratee` function.
     *
     * @name concat
     * @static
     * @memberOf module:Collections
     * @method
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, results)` which must be called once
     * it has completed with an error (which can be `null`) and an array of results.
     * Invoked with (item, callback).
     * @param {Function} [callback(err)] - A callback which is called after all the
     * `iteratee` functions have finished, or an error occurs. Results is an array
     * containing the concatenated results of the `iteratee` function. Invoked with
     * (err, results).
     * @example
     *
     * async.concat(['dir1','dir2','dir3'], fs.readdir, function(err, files) {
     *     // files is now a list of filenames that exist in the 3 directories
     * });
     */
    var concat = doParallel(concat$1);
 
    function doSeries(fn) {
        return function (obj, iteratee, callback) {
            return fn(eachOfSeries, obj, iteratee, callback);
        };
    }
 
    /**
     * The same as [`concat`]{@link module:Collections.concat} but runs only a single async operation at a time.
     *
     * @name concatSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.concat]{@link module:Collections.concat}
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, results)` which must be called once
     * it has completed with an error (which can be `null`) and an array of results.
     * Invoked with (item, callback).
     * @param {Function} [callback(err)] - A callback which is called after all the
     * `iteratee` functions have finished, or an error occurs. Results is an array
     * containing the concatenated results of the `iteratee` function. Invoked with
     * (err, results).
     */
    var concatSeries = doSeries(concat$1);
 
    /**
     * Returns a function that when called, calls-back with the values provided.
     * Useful as the first function in a [`waterfall`]{@link module:ControlFlow.waterfall}, or for plugging values in to
     * [`auto`]{@link module:ControlFlow.auto}.
     *
     * @name constant
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {...*} arguments... - Any number of arguments to automatically invoke
     * callback with.
     * @returns {Function} Returns a function that when invoked, automatically
     * invokes the callback with the previous given arguments.
     * @example
     *
     * async.waterfall([
     *     async.constant(42),
     *     function (value, next) {
     *         // value === 42
     *     },
     *     //...
     * ], callback);
     *
     * async.waterfall([
     *     async.constant(filename, "utf8"),
     *     fs.readFile,
     *     function (fileData, next) {
     *         //...
     *     }
     *     //...
     * ], callback);
     *
     * async.auto({
     *     hostname: async.constant("https://server.net/"),
     *     port: findFreePort,
     *     launchServer: ["hostname", "port", function (options, cb) {
     *         startServer(options, cb);
     *     }],
     *     //...
     * }, callback);
     */
    var constant = rest(function (values) {
        var args = [null].concat(values);
        return initialParams(function (ignoredArgs, callback) {
            return callback.apply(this, args);
        });
    });
 
    /**
     * This method returns the first argument given to it.
     *
     * @static
     * @since 0.1.0
     * @memberOf _
     * @category Util
     * @param {*} value Any value.
     * @returns {*} Returns `value`.
     * @example
     *
     * var object = { 'user': 'fred' };
     *
     * console.log(_.identity(object) === object);
     * // => true
     */
    function identity(value) {
      return value;
    }
 
    function _createTester(eachfn, check, getResult) {
        return function (arr, limit, iteratee, cb) {
            function done(err) {
                if (cb) {
                    if (err) {
                        cb(err);
                    } else {
                        cb(null, getResult(false));
                    }
                }
            }
            function wrappedIteratee(x, _, callback) {
                if (!cb) return callback();
                iteratee(x, function (err, v) {
                    if (cb) {
                        if (err) {
                            cb(err);
                            cb = iteratee = false;
                        } else if (check(v)) {
                            cb(null, getResult(true, x));
                            cb = iteratee = false;
                        }
                    }
                    callback();
                });
            }
            if (arguments.length > 3) {
                cb = cb || noop;
                eachfn(arr, limit, wrappedIteratee, done);
            } else {
                cb = iteratee;
                cb = cb || noop;
                iteratee = limit;
                eachfn(arr, wrappedIteratee, done);
            }
        };
    }
 
    function _findGetResult(v, x) {
        return x;
    }
 
    /**
     * Returns the first value in `coll` that passes an async truth test. The
     * `iteratee` is applied in parallel, meaning the first iteratee to return
     * `true` will fire the detect `callback` with that result. That means the
     * result might not be the first item in the original `coll` (in terms of order)
     * that passes the test.
 
     * If order within the original `coll` is important, then look at
     * [`detectSeries`]{@link module:Collections.detectSeries}.
     *
     * @name detect
     * @static
     * @memberOf module:Collections
     * @method
     * @alias find
     * @category Collections
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, truthValue)` which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called as soon as any
     * iteratee returns `true`, or after all the `iteratee` functions have finished.
     * Result will be the first item in the array that passes the truth test
     * (iteratee) or the value `undefined` if none passed. Invoked with
     * (err, result).
     * @example
     *
     * async.detect(['file1','file2','file3'], function(filePath, callback) {
     *     fs.access(filePath, function(err) {
     *         callback(null, !err)
     *     });
     * }, function(err, result) {
     *     // result now equals the first file in the list that exists
     * });
     */
    var detect = _createTester(eachOf, identity, _findGetResult);
 
    /**
     * The same as [`detect`]{@link module:Collections.detect} but runs a maximum of `limit` async operations at a
     * time.
     *
     * @name detectLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.detect]{@link module:Collections.detect}
     * @alias findLimit
     * @category Collections
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, truthValue)` which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called as soon as any
     * iteratee returns `true`, or after all the `iteratee` functions have finished.
     * Result will be the first item in the array that passes the truth test
     * (iteratee) or the value `undefined` if none passed. Invoked with
     * (err, result).
     */
    var detectLimit = _createTester(eachOfLimit, identity, _findGetResult);
 
    /**
     * The same as [`detect`]{@link module:Collections.detect} but runs only a single async operation at a time.
     *
     * @name detectSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.detect]{@link module:Collections.detect}
     * @alias findSeries
     * @category Collections
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, truthValue)` which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called as soon as any
     * iteratee returns `true`, or after all the `iteratee` functions have finished.
     * Result will be the first item in the array that passes the truth test
     * (iteratee) or the value `undefined` if none passed. Invoked with
     * (err, result).
     */
    var detectSeries = _createTester(eachOfSeries, identity, _findGetResult);
 
    function consoleFunc(name) {
        return rest(function (fn, args) {
            fn.apply(null, args.concat([rest(function (err, args) {
                if (typeof console === 'object') {
                    if (err) {
                        if (console.error) {
                            console.error(err);
                        }
                    } else if (console[name]) {
                        arrayEach(args, function (x) {
                            console[name](x);
                        });
                    }
                }
            })]));
        });
    }
 
    /**
     * Logs the result of an `async` function to the `console` using `console.dir`
     * to display the properties of the resulting object. Only works in Node.js or
     * in browsers that support `console.dir` and `console.error` (such as FF and
     * Chrome). If multiple arguments are returned from the async function,
     * `console.dir` is called on each argument in order.
     *
     * @name dir
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {Function} function - The function you want to eventually apply all
     * arguments to.
     * @param {...*} arguments... - Any number of arguments to apply to the function.
     * @example
     *
     * // in a module
     * var hello = function(name, callback) {
     *     setTimeout(function() {
     *         callback(null, {hello: name});
     *     }, 1000);
     * };
     *
     * // in the node repl
     * node> async.dir(hello, 'world');
     * {hello: 'world'}
     */
    var dir = consoleFunc('dir');
 
    /**
     * The post-check version of [`during`]{@link module:ControlFlow.during}. To reflect the difference in
     * the order of operations, the arguments `test` and `fn` are switched.
     *
     * Also a version of [`doWhilst`]{@link module:ControlFlow.doWhilst} with asynchronous `test` function.
     * @name doDuring
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.during]{@link module:ControlFlow.during}
     * @category Control Flow
     * @param {Function} fn - A function which is called each time `test` passes.
     * The function is passed a `callback(err)`, which must be called once it has
     * completed with an optional `err` argument. Invoked with (callback).
     * @param {Function} test - asynchronous truth test to perform before each
     * execution of `fn`. Invoked with (...args, callback), where `...args` are the
     * non-error args from the previous callback of `fn`.
     * @param {Function} [callback] - A callback which is called after the test
     * function has failed and repeated execution of `fn` has stopped. `callback`
     * will be passed an error if one occured, otherwise `null`.
     */
    function doDuring(fn, test, callback) {
        callback = onlyOnce(callback || noop);
 
        var next = rest(function (err, args) {
            if (err) return callback(err);
            args.push(check);
            test.apply(this, args);
        });
 
        function check(err, truth) {
            if (err) return callback(err);
            if (!truth) return callback(null);
            fn(next);
        }
 
        check(null, true);
    }
 
    /**
     * The post-check version of [`whilst`]{@link module:ControlFlow.whilst}. To reflect the difference in
     * the order of operations, the arguments `test` and `iteratee` are switched.
     *
     * `doWhilst` is to `whilst` as `do while` is to `while` in plain JavaScript.
     *
     * @name doWhilst
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.whilst]{@link module:ControlFlow.whilst}
     * @category Control Flow
     * @param {Function} iteratee - A function which is called each time `test`
     * passes. The function is passed a `callback(err)`, which must be called once
     * it has completed with an optional `err` argument. Invoked with (callback).
     * @param {Function} test - synchronous truth test to perform after each
     * execution of `iteratee`. Invoked with Invoked with the non-error callback
     * results of `iteratee`.
     * @param {Function} [callback] - A callback which is called after the test
     * function has failed and repeated execution of `iteratee` has stopped.
     * `callback` will be passed an error and any arguments passed to the final
     * `iteratee`'s callback. Invoked with (err, [results]);
     */
    function doWhilst(iteratee, test, callback) {
        callback = onlyOnce(callback || noop);
        var next = rest(function (err, args) {
            if (err) return callback(err);
            if (test.apply(this, args)) return iteratee(next);
            callback.apply(null, [null].concat(args));
        });
        iteratee(next);
    }
 
    /**
     * Like ['doWhilst']{@link module:ControlFlow.doWhilst}, except the `test` is inverted. Note the
     * argument ordering differs from `until`.
     *
     * @name doUntil
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.doWhilst]{@link module:ControlFlow.doWhilst}
     * @category Control Flow
     * @param {Function} fn - A function which is called each time `test` fails.
     * The function is passed a `callback(err)`, which must be called once it has
     * completed with an optional `err` argument. Invoked with (callback).
     * @param {Function} test - synchronous truth test to perform after each
     * execution of `fn`. Invoked with the non-error callback results of `fn`.
     * @param {Function} [callback] - A callback which is called after the test
     * function has passed and repeated execution of `fn` has stopped. `callback`
     * will be passed an error and any arguments passed to the final `fn`'s
     * callback. Invoked with (err, [results]);
     */
    function doUntil(fn, test, callback) {
        doWhilst(fn, function () {
            return !test.apply(this, arguments);
        }, callback);
    }
 
    /**
     * Like [`whilst`]{@link module:ControlFlow.whilst}, except the `test` is an asynchronous function that
     * is passed a callback in the form of `function (err, truth)`. If error is
     * passed to `test` or `fn`, the main callback is immediately called with the
     * value of the error.
     *
     * @name during
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.whilst]{@link module:ControlFlow.whilst}
     * @category Control Flow
     * @param {Function} test - asynchronous truth test to perform before each
     * execution of `fn`. Invoked with (callback).
     * @param {Function} fn - A function which is called each time `test` passes.
     * The function is passed a `callback(err)`, which must be called once it has
     * completed with an optional `err` argument. Invoked with (callback).
     * @param {Function} [callback] - A callback which is called after the test
     * function has failed and repeated execution of `fn` has stopped. `callback`
     * will be passed an error, if one occured, otherwise `null`.
     * @example
     *
     * var count = 0;
     *
     * async.during(
     *     function (callback) {
     *         return callback(null, count < 5);
     *     },
     *     function (callback) {
     *         count++;
     *         setTimeout(callback, 1000);
     *     },
     *     function (err) {
     *         // 5 seconds have passed
     *     }
     * );
     */
    function during(test, fn, callback) {
        callback = onlyOnce(callback || noop);
 
        function next(err) {
            if (err) return callback(err);
            test(check);
        }
 
        function check(err, truth) {
            if (err) return callback(err);
            if (!truth) return callback(null);
            fn(next);
        }
 
        test(check);
    }
 
    function _withoutIndex(iteratee) {
        return function (value, index, callback) {
            return iteratee(value, callback);
        };
    }
 
    /**
     * Applies the function `iteratee` to each item in `coll`, in parallel.
     * The `iteratee` is called with an item from the list, and a callback for when
     * it has finished. If the `iteratee` passes an error to its `callback`, the
     * main `callback` (for the `each` function) is immediately called with the
     * error.
     *
     * Note, that since this function applies `iteratee` to each item in parallel,
     * there is no guarantee that the iteratee functions will complete in order.
     *
     * @name each
     * @static
     * @memberOf module:Collections
     * @method
     * @alias forEach
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each item
     * in `coll`. The iteratee is passed a `callback(err)` which must be called once
     * it has completed. If no error has occurred, the `callback` should be run
     * without arguments or with an explicit `null` argument. The array index is not
     * passed to the iteratee. Invoked with (item, callback). If you need the index,
     * use `eachOf`.
     * @param {Function} [callback] - A callback which is called when all
     * `iteratee` functions have finished, or an error occurs. Invoked with (err).
     * @example
     *
     * // assuming openFiles is an array of file names and saveFile is a function
     * // to save the modified contents of that file:
     *
     * async.each(openFiles, saveFile, function(err){
     *   // if any of the saves produced an error, err would equal that error
     * });
     *
     * // assuming openFiles is an array of file names
     * async.each(openFiles, function(file, callback) {
     *
     *     // Perform operation on file here.
     *     console.log('Processing file ' + file);
     *
     *     if( file.length > 32 ) {
     *       console.log('This file name is too long');
     *       callback('File name too long');
     *     } else {
     *       // Do work to process file here
     *       console.log('File processed');
     *       callback();
     *     }
     * }, function(err) {
     *     // if any of the file processing produced an error, err would equal that error
     *     if( err ) {
     *       // One of the iterations produced an error.
     *       // All processing will now stop.
     *       console.log('A file failed to process');
     *     } else {
     *       console.log('All files have been processed successfully');
     *     }
     * });
     */
    function eachLimit(coll, iteratee, callback) {
      eachOf(coll, _withoutIndex(iteratee), callback);
    }
 
    /**
     * The same as [`each`]{@link module:Collections.each} but runs a maximum of `limit` async operations at a time.
     *
     * @name eachLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.each]{@link module:Collections.each}
     * @alias forEachLimit
     * @category Collection
     * @param {Array|Iterable|Object} coll - A colleciton to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A function to apply to each item in `coll`. The
     * iteratee is passed a `callback(err)` which must be called once it has
     * completed. If no error has occurred, the `callback` should be run without
     * arguments or with an explicit `null` argument. The array index is not passed
     * to the iteratee. Invoked with (item, callback). If you need the index, use
     * `eachOfLimit`.
     * @param {Function} [callback] - A callback which is called when all
     * `iteratee` functions have finished, or an error occurs. Invoked with (err).
     */
    function eachLimit$1(coll, limit, iteratee, callback) {
      _eachOfLimit(limit)(coll, _withoutIndex(iteratee), callback);
    }
 
    /**
     * The same as [`each`]{@link module:Collections.each} but runs only a single async operation at a time.
     *
     * @name eachSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.each]{@link module:Collections.each}
     * @alias forEachSeries
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each
     * item in `coll`. The iteratee is passed a `callback(err)` which must be called
     * once it has completed. If no error has occurred, the `callback` should be run
     * without arguments or with an explicit `null` argument. The array index is
     * not passed to the iteratee. Invoked with (item, callback). If you need the
     * index, use `eachOfSeries`.
     * @param {Function} [callback] - A callback which is called when all
     * `iteratee` functions have finished, or an error occurs. Invoked with (err).
     */
    var eachSeries = doLimit(eachLimit$1, 1);
 
    /**
     * Wrap an async function and ensure it calls its callback on a later tick of
     * the event loop.  If the function already calls its callback on a next tick,
     * no extra deferral is added. This is useful for preventing stack overflows
     * (`RangeError: Maximum call stack size exceeded`) and generally keeping
     * [Zalgo](http://blog.izs.me/post/59142742143/designing-apis-for-asynchrony)
     * contained.
     *
     * @name ensureAsync
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {Function} fn - an async function, one that expects a node-style
     * callback as its last argument.
     * @returns {Function} Returns a wrapped function with the exact same call
     * signature as the function passed in.
     * @example
     *
     * function sometimesAsync(arg, callback) {
     *     if (cache[arg]) {
     *         return callback(null, cache[arg]); // this would be synchronous!!
     *     } else {
     *         doSomeIO(arg, callback); // this IO would be asynchronous
     *     }
     * }
     *
     * // this has a risk of stack overflows if many results are cached in a row
     * async.mapSeries(args, sometimesAsync, done);
     *
     * // this will defer sometimesAsync's callback if necessary,
     * // preventing stack overflows
     * async.mapSeries(args, async.ensureAsync(sometimesAsync), done);
     */
    function ensureAsync(fn) {
        return initialParams(function (args, callback) {
            var sync = true;
            args.push(function () {
                var innerArgs = arguments;
                if (sync) {
                    setImmediate$1(function () {
                        callback.apply(null, innerArgs);
                    });
                } else {
                    callback.apply(null, innerArgs);
                }
            });
            fn.apply(this, args);
            sync = false;
        });
    }
 
    function notId(v) {
        return !v;
    }
 
    /**
     * Returns `true` if every element in `coll` satisfies an async test. If any
     * iteratee call returns `false`, the main `callback` is immediately called.
     *
     * @name every
     * @static
     * @memberOf module:Collections
     * @method
     * @alias all
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in the
     * collection in parallel. The iteratee is passed a `callback(err, truthValue)`
     * which must be called with a  boolean argument once it has completed. Invoked
     * with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Result will be either `true` or `false`
     * depending on the values of the async tests. Invoked with (err, result).
     * @example
     *
     * async.every(['file1','file2','file3'], function(filePath, callback) {
     *     fs.access(filePath, function(err) {
     *         callback(null, !err)
     *     });
     * }, function(err, result) {
     *     // if result is true then every file exists
     * });
     */
    var every = _createTester(eachOf, notId, notId);
 
    /**
     * The same as [`every`]{@link module:Collections.every} but runs a maximum of `limit` async operations at a time.
     *
     * @name everyLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.every]{@link module:Collections.every}
     * @alias allLimit
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A truth test to apply to each item in the
     * collection in parallel. The iteratee is passed a `callback(err, truthValue)`
     * which must be called with a  boolean argument once it has completed. Invoked
     * with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Result will be either `true` or `false`
     * depending on the values of the async tests. Invoked with (err, result).
     */
    var everyLimit = _createTester(eachOfLimit, notId, notId);
 
    /**
     * The same as [`every`]{@link module:Collections.every} but runs only a single async operation at a time.
     *
     * @name everySeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.every]{@link module:Collections.every}
     * @alias allSeries
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in the
     * collection in parallel. The iteratee is passed a `callback(err, truthValue)`
     * which must be called with a  boolean argument once it has completed. Invoked
     * with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Result will be either `true` or `false`
     * depending on the values of the async tests. Invoked with (err, result).
     */
    var everySeries = doLimit(everyLimit, 1);
 
    function _filter(eachfn, arr, iteratee, callback) {
        callback = once(callback || noop);
        var results = [];
        eachfn(arr, function (x, index, callback) {
            iteratee(x, function (err, v) {
                if (err) {
                    callback(err);
                } else {
                    if (v) {
                        results.push({ index: index, value: x });
                    }
                    callback();
                }
            });
        }, function (err) {
            if (err) {
                callback(err);
            } else {
                callback(null, arrayMap(results.sort(function (a, b) {
                    return a.index - b.index;
                }), baseProperty('value')));
            }
        });
    }
 
    /**
     * Returns a new array of all the values in `coll` which pass an async truth
     * test. This operation is performed in parallel, but the results array will be
     * in the same order as the original.
     *
     * @name filter
     * @static
     * @memberOf module:Collections
     * @method
     * @alias select
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The `iteratee` is passed a `callback(err, truthValue)`, which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Invoked with (err, results).
     * @example
     *
     * async.filter(['file1','file2','file3'], function(filePath, callback) {
     *     fs.access(filePath, function(err) {
     *         callback(null, !err)
     *     });
     * }, function(err, results) {
     *     // results now equals an array of the existing files
     * });
     */
    var filter = doParallel(_filter);
 
    /**
     * The same as [`filter`]{@link module:Collections.filter} but runs a maximum of `limit` async operations at a
     * time.
     *
     * @name filterLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.filter]{@link module:Collections.filter}
     * @alias selectLimit
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The `iteratee` is passed a `callback(err, truthValue)`, which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Invoked with (err, results).
     */
    var filterLimit = doParallelLimit(_filter);
 
    /**
     * The same as [`filter`]{@link module:Collections.filter} but runs only a single async operation at a time.
     *
     * @name filterSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.filter]{@link module:Collections.filter}
     * @alias selectSeries
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The `iteratee` is passed a `callback(err, truthValue)`, which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Invoked with (err, results)
     */
    var filterSeries = doLimit(filterLimit, 1);
 
    /**
     * Calls the asynchronous function `fn` with a callback parameter that allows it
     * to call itself again, in series, indefinitely.
 
     * If an error is passed to the
     * callback then `errback` is called with the error, and execution stops,
     * otherwise it will never be called.
     *
     * @name forever
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Function} fn - a function to call repeatedly. Invoked with (next).
     * @param {Function} [errback] - when `fn` passes an error to it's callback,
     * this function will be called, and execution stops. Invoked with (err).
     * @example
     *
     * async.forever(
     *     function(next) {
     *         // next is suitable for passing to things that need a callback(err [, whatever]);
     *         // it will result in this function being called again.
     *     },
     *     function(err) {
     *         // if next is called with a value in its first parameter, it will appear
     *         // in here as 'err', and execution will stop.
     *     }
     * );
     */
    function forever(fn, errback) {
        var done = onlyOnce(errback || noop);
        var task = ensureAsync(fn);
 
        function next(err) {
            if (err) return done(err);
            task(next);
        }
        next();
    }
 
    /**
     * Logs the result of an `async` function to the `console`. Only works in
     * Node.js or in browsers that support `console.log` and `console.error` (such
     * as FF and Chrome). If multiple arguments are returned from the async
     * function, `console.log` is called on each argument in order.
     *
     * @name log
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {Function} function - The function you want to eventually apply all
     * arguments to.
     * @param {...*} arguments... - Any number of arguments to apply to the function.
     * @example
     *
     * // in a module
     * var hello = function(name, callback) {
     *     setTimeout(function() {
     *         callback(null, 'hello ' + name);
     *     }, 1000);
     * };
     *
     * // in the node repl
     * node> async.log(hello, 'world');
     * 'hello world'
     */
    var log = consoleFunc('log');
 
    /**
     * The same as [`mapValues`]{@link module:Collections.mapValues} but runs a maximum of `limit` async operations at a
     * time.
     *
     * @name mapValuesLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.mapValues]{@link module:Collections.mapValues}
     * @category Collection
     * @param {Object} obj - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A function to apply to each value in `obj`.
     * The iteratee is passed a `callback(err, transformed)` which must be called
     * once it has completed with an error (which can be `null`) and a
     * transformed value. Invoked with (value, key, callback).
     * @param {Function} [callback] - A callback which is called when all `iteratee`
     * functions have finished, or an error occurs. Result is an object of the
     * transformed values from the `obj`. Invoked with (err, result).
     */
    function mapValuesLimit(obj, limit, iteratee, callback) {
        callback = once(callback || noop);
        var newObj = {};
        eachOfLimit(obj, limit, function (val, key, next) {
            iteratee(val, key, function (err, result) {
                if (err) return next(err);
                newObj[key] = result;
                next();
            });
        }, function (err) {
            callback(err, newObj);
        });
    }
 
    /**
     * A relative of [`map`]{@link module:Collections.map}, designed for use with objects.
     *
     * Produces a new Object by mapping each value of `obj` through the `iteratee`
     * function. The `iteratee` is called each `value` and `key` from `obj` and a
     * callback for when it has finished processing. Each of these callbacks takes
     * two arguments: an `error`, and the transformed item from `obj`. If `iteratee`
     * passes an error to its callback, the main `callback` (for the `mapValues`
     * function) is immediately called with the error.
     *
     * Note, the order of the keys in the result is not guaranteed.  The keys will
     * be roughly in the order they complete, (but this is very engine-specific)
     *
     * @name mapValues
     * @static
     * @memberOf module:Collections
     * @method
     * @category Collection
     * @param {Object} obj - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each value and key in
     * `coll`. The iteratee is passed a `callback(err, transformed)` which must be
     * called once it has completed with an error (which can be `null`) and a
     * transformed value. Invoked with (value, key, callback).
     * @param {Function} [callback] - A callback which is called when all `iteratee`
     * functions have finished, or an error occurs. Results is an array of the
     * transformed items from the `obj`. Invoked with (err, result).
     * @example
     *
     * async.mapValues({
     *     f1: 'file1',
     *     f2: 'file2',
     *     f3: 'file3'
     * }, function (file, key, callback) {
     *   fs.stat(file, callback);
     * }, function(err, result) {
     *     // results is now a map of stats for each file, e.g.
     *     // {
     *     //     f1: [stats for file1],
     *     //     f2: [stats for file2],
     *     //     f3: [stats for file3]
     *     // }
     * });
     */
 
    var mapValues = doLimit(mapValuesLimit, Infinity);
 
    /**
     * The same as [`mapValues`]{@link module:Collections.mapValues} but runs only a single async operation at a time.
     *
     * @name mapValuesSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.mapValues]{@link module:Collections.mapValues}
     * @category Collection
     * @param {Object} obj - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each value in `obj`.
     * The iteratee is passed a `callback(err, transformed)` which must be called
     * once it has completed with an error (which can be `null`) and a
     * transformed value. Invoked with (value, key, callback).
     * @param {Function} [callback] - A callback which is called when all `iteratee`
     * functions have finished, or an error occurs. Result is an object of the
     * transformed values from the `obj`. Invoked with (err, result).
     */
    var mapValuesSeries = doLimit(mapValuesLimit, 1);
 
    function has(obj, key) {
        return key in obj;
    }
 
    /**
     * Caches the results of an `async` function. When creating a hash to store
     * function results against, the callback is omitted from the hash and an
     * optional hash function can be used.
     *
     * If no hash function is specified, the first argument is used as a hash key,
     * which may work reasonably if it is a string or a data type that converts to a
     * distinct string. Note that objects and arrays will not behave reasonably.
     * Neither will cases where the other arguments are significant. In such cases,
     * specify your own hash function.
     *
     * The cache of results is exposed as the `memo` property of the function
     * returned by `memoize`.
     *
     * @name memoize
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {Function} fn - The function to proxy and cache results from.
     * @param {Function} hasher - An optional function for generating a custom hash
     * for storing results. It has all the arguments applied to it apart from the
     * callback, and must be synchronous.
     * @returns {Function} a memoized version of `fn`
     * @example
     *
     * var slow_fn = function(name, callback) {
     *     // do something
     *     callback(null, result);
     * };
     * var fn = async.memoize(slow_fn);
     *
     * // fn can now be used as if it were slow_fn
     * fn('some name', function() {
     *     // callback
     * });
     */
    function memoize(fn, hasher) {
        var memo = Object.create(null);
        var queues = Object.create(null);
        hasher = hasher || identity;
        var memoized = initialParams(function memoized(args, callback) {
            var key = hasher.apply(null, args);
            if (has(memo, key)) {
                setImmediate$1(function () {
                    callback.apply(null, memo[key]);
                });
            } else if (has(queues, key)) {
                queues[key].push(callback);
            } else {
                queues[key] = [callback];
                fn.apply(null, args.concat([rest(function (args) {
                    memo[key] = args;
                    var q = queues[key];
                    delete queues[key];
                    for (var i = 0, l = q.length; i < l; i++) {
                        q[i].apply(null, args);
                    }
                })]));
            }
        });
        memoized.memo = memo;
        memoized.unmemoized = fn;
        return memoized;
    }
 
    /**
     * Calls `callback` on a later loop around the event loop. In Node.js this just
     * calls `setImmediate`.  In the browser it will use `setImmediate` if
     * available, otherwise `setTimeout(callback, 0)`, which means other higher
     * priority events may precede the execution of `callback`.
     *
     * This is used internally for browser-compatibility purposes.
     *
     * @name nextTick
     * @static
     * @memberOf module:Utils
     * @method
     * @alias setImmediate
     * @category Util
     * @param {Function} callback - The function to call on a later loop around
     * the event loop. Invoked with (args...).
     * @param {...*} args... - any number of additional arguments to pass to the
     * callback on the next tick.
     * @example
     *
     * var call_order = [];
     * async.nextTick(function() {
     *     call_order.push('two');
     *     // call_order now equals ['one','two']
     * });
     * call_order.push('one');
     *
     * async.setImmediate(function (a, b, c) {
     *     // a, b, and c equal 1, 2, and 3
     * }, 1, 2, 3);
     */
    var _defer$1;
 
    Eif (hasNextTick) {
        _defer$1 = process.nextTick;
    } else if (hasSetImmediate) {
        _defer$1 = setImmediate;
    } else {
        _defer$1 = fallback;
    }
 
    var nextTick = wrap(_defer$1);
 
    function _parallel(eachfn, tasks, callback) {
        callback = callback || noop;
        var results = isArrayLike(tasks) ? [] : {};
 
        eachfn(tasks, function (task, key, callback) {
            task(rest(function (err, args) {
                if (args.length <= 1) {
                    args = args[0];
                }
                results[key] = args;
                callback(err);
            }));
        }, function (err) {
            callback(err, results);
        });
    }
 
    /**
     * Run the `tasks` collection of functions in parallel, without waiting until
     * the previous function has completed. If any of the functions pass an error to
     * its callback, the main `callback` is immediately called with the value of the
     * error. Once the `tasks` have completed, the results are passed to the final
     * `callback` as an array.
     *
     * **Note:** `parallel` is about kicking-off I/O tasks in parallel, not about
     * parallel execution of code.  If your tasks do not use any timers or perform
     * any I/O, they will actually be executed in series.  Any synchronous setup
     * sections for each task will happen one after the other.  JavaScript remains
     * single-threaded.
     *
     * It is also possible to use an object instead of an array. Each property will
     * be run as a function and the results will be passed to the final `callback`
     * as an object instead of an array. This can be a more readable way of handling
     * results from {@link async.parallel}.
     *
     * @name parallel
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Array|Iterable|Object} tasks - A collection containing functions to run.
     * Each function is passed a `callback(err, result)` which it must call on
     * completion with an error `err` (which can be `null`) and an optional `result`
     * value.
     * @param {Function} [callback] - An optional callback to run once all the
     * functions have completed successfully. This function gets a results array
     * (or object) containing all the result arguments passed to the task callbacks.
     * Invoked with (err, results).
     * @example
     * async.parallel([
     *     function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'one');
     *         }, 200);
     *     },
     *     function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'two');
     *         }, 100);
     *     }
     * ],
     * // optional callback
     * function(err, results) {
     *     // the results array will equal ['one','two'] even though
     *     // the second function had a shorter timeout.
     * });
     *
     * // an example using an object instead of an array
     * async.parallel({
     *     one: function(callback) {
     *         setTimeout(function() {
     *             callback(null, 1);
     *         }, 200);
     *     },
     *     two: function(callback) {
     *         setTimeout(function() {
     *             callback(null, 2);
     *         }, 100);
     *     }
     * }, function(err, results) {
     *     // results is now equals to: {one: 1, two: 2}
     * });
     */
    function parallelLimit(tasks, callback) {
      _parallel(eachOf, tasks, callback);
    }
 
    /**
     * The same as [`parallel`]{@link module:ControlFlow.parallel} but runs a maximum of `limit` async operations at a
     * time.
     *
     * @name parallelLimit
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.parallel]{@link module:ControlFlow.parallel}
     * @category Control Flow
     * @param {Array|Collection} tasks - A collection containing functions to run.
     * Each function is passed a `callback(err, result)` which it must call on
     * completion with an error `err` (which can be `null`) and an optional `result`
     * value.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} [callback] - An optional callback to run once all the
     * functions have completed successfully. This function gets a results array
     * (or object) containing all the result arguments passed to the task callbacks.
     * Invoked with (err, results).
     */
    function parallelLimit$1(tasks, limit, callback) {
      _parallel(_eachOfLimit(limit), tasks, callback);
    }
 
    /**
     * A queue of tasks for the worker function to complete.
     * @typedef {Object} QueueObject
     * @memberOf module:ControlFlow
     * @property {Function} length - a function returning the number of items
     * waiting to be processed. Invoke with `queue.length()`.
     * @property {boolean} started - a boolean indicating whether or not any
     * items have been pushed and processed by the queue.
     * @property {Function} running - a function returning the number of items
     * currently being processed. Invoke with `queue.running()`.
     * @property {Function} workersList - a function returning the array of items
     * currently being processed. Invoke with `queue.workersList()`.
     * @property {Function} idle - a function returning false if there are items
     * waiting or being processed, or true if not. Invoke with `queue.idle()`.
     * @property {number} concurrency - an integer for determining how many `worker`
     * functions should be run in parallel. This property can be changed after a
     * `queue` is created to alter the concurrency on-the-fly.
     * @property {Function} push - add a new task to the `queue`. Calls `callback`
     * once the `worker` has finished processing the task. Instead of a single task,
     * a `tasks` array can be submitted. The respective callback is used for every
     * task in the list. Invoke with `queue.push(task, [callback])`,
     * @property {Function} unshift - add a new task to the front of the `queue`.
     * Invoke with `queue.unshift(task, [callback])`.
     * @property {Function} saturated - a callback that is called when the number of
     * running workers hits the `concurrency` limit, and further tasks will be
     * queued.
     * @property {Function} unsaturated - a callback that is called when the number
     * of running workers is less than the `concurrency` & `buffer` limits, and
     * further tasks will not be queued.
     * @property {number} buffer - A minimum threshold buffer in order to say that
     * the `queue` is `unsaturated`.
     * @property {Function} empty - a callback that is called when the last item
     * from the `queue` is given to a `worker`.
     * @property {Function} drain - a callback that is called when the last item
     * from the `queue` has returned from the `worker`.
     * @property {Function} error - a callback that is called when a task errors.
     * Has the signature `function(error, task)`.
     * @property {boolean} paused - a boolean for determining whether the queue is
     * in a paused state.
     * @property {Function} pause - a function that pauses the processing of tasks
     * until `resume()` is called. Invoke with `queue.pause()`.
     * @property {Function} resume - a function that resumes the processing of
     * queued tasks when the queue is paused. Invoke with `queue.resume()`.
     * @property {Function} kill - a function that removes the `drain` callback and
     * empties remaining tasks from the queue forcing it to go idle. Invoke with `queue.kill()`.
     */
 
    /**
     * Creates a `queue` object with the specified `concurrency`. Tasks added to the
     * `queue` are processed in parallel (up to the `concurrency` limit). If all
     * `worker`s are in progress, the task is queued until one becomes available.
     * Once a `worker` completes a `task`, that `task`'s callback is called.
     *
     * @name queue
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Function} worker - An asynchronous function for processing a queued
     * task, which must call its `callback(err)` argument when finished, with an
     * optional `error` as an argument.  If you want to handle errors from an
     * individual task, pass a callback to `q.push()`. Invoked with
     * (task, callback).
     * @param {number} [concurrency=1] - An `integer` for determining how many
     * `worker` functions should be run in parallel.  If omitted, the concurrency
     * defaults to `1`.  If the concurrency is `0`, an error is thrown.
     * @returns {module:ControlFlow.QueueObject} A queue object to manage the tasks. Callbacks can
     * attached as certain properties to listen for specific events during the
     * lifecycle of the queue.
     * @example
     *
     * // create a queue object with concurrency 2
     * var q = async.queue(function(task, callback) {
     *     console.log('hello ' + task.name);
     *     callback();
     * }, 2);
     *
     * // assign a callback
     * q.drain = function() {
     *     console.log('all items have been processed');
     * };
     *
     * // add some items to the queue
     * q.push({name: 'foo'}, function(err) {
     *     console.log('finished processing foo');
     * });
     * q.push({name: 'bar'}, function (err) {
     *     console.log('finished processing bar');
     * });
     *
     * // add some items to the queue (batch-wise)
     * q.push([{name: 'baz'},{name: 'bay'},{name: 'bax'}], function(err) {
     *     console.log('finished processing item');
     * });
     *
     * // add some items to the front of the queue
     * q.unshift({name: 'bar'}, function (err) {
     *     console.log('finished processing bar');
     * });
     */
    function queue$1 (worker, concurrency) {
      return queue(function (items, cb) {
        worker(items[0], cb);
      }, concurrency, 1);
    }
 
    /**
     * The same as [async.queue]{@link module:ControlFlow.queue} only tasks are assigned a priority and
     * completed in ascending priority order.
     *
     * @name priorityQueue
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.queue]{@link module:ControlFlow.queue}
     * @category Control Flow
     * @param {Function} worker - An asynchronous function for processing a queued
     * task, which must call its `callback(err)` argument when finished, with an
     * optional `error` as an argument.  If you want to handle errors from an
     * individual task, pass a callback to `q.push()`. Invoked with
     * (task, callback).
     * @param {number} concurrency - An `integer` for determining how many `worker`
     * functions should be run in parallel.  If omitted, the concurrency defaults to
     * `1`.  If the concurrency is `0`, an error is thrown.
     * @returns {module:ControlFlow.QueueObject} A priorityQueue object to manage the tasks. There are two
     * differences between `queue` and `priorityQueue` objects:
     * * `push(task, priority, [callback])` - `priority` should be a number. If an
     *   array of `tasks` is given, all tasks will be assigned the same priority.
     * * The `unshift` method was removed.
     */
    function priorityQueue (worker, concurrency) {
        // Start with a normal queue
        var q = queue$1(worker, concurrency);
 
        // Override push to accept second parameter representing priority
        q.push = function (data, priority, callback) {
            if (callback == null) callback = noop;
            if (typeof callback !== 'function') {
                throw new Error('task callback must be a function');
            }
            q.started = true;
            if (!isArray(data)) {
                data = [data];
            }
            if (data.length === 0) {
                // call drain immediately if there are no tasks
                return setImmediate$1(function () {
                    q.drain();
                });
            }
 
            priority = priority || 0;
            var nextNode = q._tasks.head;
            while (nextNode && priority >= nextNode.priority) {
                nextNode = nextNode.next;
            }
 
            arrayEach(data, function (task) {
                var item = {
                    data: task,
                    priority: priority,
                    callback: callback
                };
 
                if (nextNode) {
                    q._tasks.insertBefore(nextNode, item);
                } else {
                    q._tasks.push(item);
                }
            });
            setImmediate$1(q.process);
        };
 
        // Remove unshift function
        delete q.unshift;
 
        return q;
    }
 
    /**
     * Runs the `tasks` array of functions in parallel, without waiting until the
     * previous function has completed. Once any the `tasks` completed or pass an
     * error to its callback, the main `callback` is immediately called. It's
     * equivalent to `Promise.race()`.
     *
     * @name race
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Array} tasks - An array containing functions to run. Each function
     * is passed a `callback(err, result)` which it must call on completion with an
     * error `err` (which can be `null`) and an optional `result` value.
     * @param {Function} callback - A callback to run once any of the functions have
     * completed. This function gets an error or result from the first function that
     * completed. Invoked with (err, result).
     * @returns undefined
     * @example
     *
     * async.race([
     *     function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'one');
     *         }, 200);
     *     },
     *     function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'two');
     *         }, 100);
     *     }
     * ],
     * // main callback
     * function(err, result) {
     *     // the result will be equal to 'two' as it finishes earlier
     * });
     */
    function race(tasks, callback) {
        callback = once(callback || noop);
        if (!isArray(tasks)) return callback(new TypeError('First argument to race must be an array of functions'));
        if (!tasks.length) return callback();
        arrayEach(tasks, function (task) {
            task(callback);
        });
    }
 
    var slice = Array.prototype.slice;
 
    /**
     * Same as [`reduce`]{@link module:Collections.reduce}, only operates on `array` in reverse order.
     *
     * @name reduceRight
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.reduce]{@link module:Collections.reduce}
     * @alias foldr
     * @category Collection
     * @param {Array} array - A collection to iterate over.
     * @param {*} memo - The initial state of the reduction.
     * @param {Function} iteratee - A function applied to each item in the
     * array to produce the next step in the reduction. The `iteratee` is passed a
     * `callback(err, reduction)` which accepts an optional error as its first
     * argument, and the state of the reduction as the second. If an error is
     * passed to the callback, the reduction is stopped and the main `callback` is
     * immediately called with the error. Invoked with (memo, item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Result is the reduced value. Invoked with
     * (err, result).
     */
    function reduceRight(array, memo, iteratee, callback) {
      var reversed = slice.call(array).reverse();
      reduce(reversed, memo, iteratee, callback);
    }
 
    /**
     * Wraps the function in another function that always returns data even when it
     * errors.
     *
     * The object returned has either the property `error` or `value`.
     *
     * @name reflect
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {Function} fn - The function you want to wrap
     * @returns {Function} - A function that always passes null to it's callback as
     * the error. The second argument to the callback will be an `object` with
     * either an `error` or a `value` property.
     * @example
     *
     * async.parallel([
     *     async.reflect(function(callback) {
     *         // do some stuff ...
     *         callback(null, 'one');
     *     }),
     *     async.reflect(function(callback) {
     *         // do some more stuff but error ...
     *         callback('bad stuff happened');
     *     }),
     *     async.reflect(function(callback) {
     *         // do some more stuff ...
     *         callback(null, 'two');
     *     })
     * ],
     * // optional callback
     * function(err, results) {
     *     // values
     *     // results[0].value = 'one'
     *     // results[1].error = 'bad stuff happened'
     *     // results[2].value = 'two'
     * });
     */
    function reflect(fn) {
        return initialParams(function reflectOn(args, reflectCallback) {
            args.push(rest(function callback(err, cbArgs) {
                if (err) {
                    reflectCallback(null, {
                        error: err
                    });
                } else {
                    var value = null;
                    if (cbArgs.length === 1) {
                        value = cbArgs[0];
                    } else if (cbArgs.length > 1) {
                        value = cbArgs;
                    }
                    reflectCallback(null, {
                        value: value
                    });
                }
            }));
 
            return fn.apply(this, args);
        });
    }
 
    function reject$1(eachfn, arr, iteratee, callback) {
        _filter(eachfn, arr, function (value, cb) {
            iteratee(value, function (err, v) {
                if (err) {
                    cb(err);
                } else {
                    cb(null, !v);
                }
            });
        }, callback);
    }
 
    /**
     * The opposite of [`filter`]{@link module:Collections.filter}. Removes values that pass an `async` truth test.
     *
     * @name reject
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.filter]{@link module:Collections.filter}
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The `iteratee` is passed a `callback(err, truthValue)`, which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Invoked with (err, results).
     * @example
     *
     * async.reject(['file1','file2','file3'], function(filePath, callback) {
     *     fs.access(filePath, function(err) {
     *         callback(null, !err)
     *     });
     * }, function(err, results) {
     *     // results now equals an array of missing files
     *     createFiles(results);
     * });
     */
    var reject = doParallel(reject$1);
 
    /**
     * A helper function that wraps an array or an object of functions with reflect.
     *
     * @name reflectAll
     * @static
     * @memberOf module:Utils
     * @method
     * @see [async.reflect]{@link module:Utils.reflect}
     * @category Util
     * @param {Array} tasks - The array of functions to wrap in `async.reflect`.
     * @returns {Array} Returns an array of functions, each function wrapped in
     * `async.reflect`
     * @example
     *
     * let tasks = [
     *     function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'one');
     *         }, 200);
     *     },
     *     function(callback) {
     *         // do some more stuff but error ...
     *         callback(new Error('bad stuff happened'));
     *     },
     *     function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'two');
     *         }, 100);
     *     }
     * ];
     *
     * async.parallel(async.reflectAll(tasks),
     * // optional callback
     * function(err, results) {
     *     // values
     *     // results[0].value = 'one'
     *     // results[1].error = Error('bad stuff happened')
     *     // results[2].value = 'two'
     * });
     *
     * // an example using an object instead of an array
     * let tasks = {
     *     one: function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'one');
     *         }, 200);
     *     },
     *     two: function(callback) {
     *         callback('two');
     *     },
     *     three: function(callback) {
     *         setTimeout(function() {
     *             callback(null, 'three');
     *         }, 100);
     *     }
     * };
     *
     * async.parallel(async.reflectAll(tasks),
     * // optional callback
     * function(err, results) {
     *     // values
     *     // results.one.value = 'one'
     *     // results.two.error = 'two'
     *     // results.three.value = 'three'
     * });
     */
    function reflectAll(tasks) {
        var results;
        if (isArray(tasks)) {
            results = arrayMap(tasks, reflect);
        } else {
            results = {};
            baseForOwn(tasks, function (task, key) {
                results[key] = reflect.call(this, task);
            });
        }
        return results;
    }
 
    /**
     * The same as [`reject`]{@link module:Collections.reject} but runs a maximum of `limit` async operations at a
     * time.
     *
     * @name rejectLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.reject]{@link module:Collections.reject}
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The `iteratee` is passed a `callback(err, truthValue)`, which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Invoked with (err, results).
     */
    var rejectLimit = doParallelLimit(reject$1);
 
    /**
     * The same as [`reject`]{@link module:Collections.reject} but runs only a single async operation at a time.
     *
     * @name rejectSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.reject]{@link module:Collections.reject}
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in `coll`.
     * The `iteratee` is passed a `callback(err, truthValue)`, which must be called
     * with a boolean argument once it has completed. Invoked with (item, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Invoked with (err, results).
     */
    var rejectSeries = doLimit(rejectLimit, 1);
 
    /**
     * Creates a function that returns `value`.
     *
     * @static
     * @memberOf _
     * @since 2.4.0
     * @category Util
     * @param {*} value The value to return from the new function.
     * @returns {Function} Returns the new constant function.
     * @example
     *
     * var objects = _.times(2, _.constant({ 'a': 1 }));
     *
     * console.log(objects);
     * // => [{ 'a': 1 }, { 'a': 1 }]
     *
     * console.log(objects[0] === objects[1]);
     * // => true
     */
    function constant$1(value) {
      return function() {
        return value;
      };
    }
 
    /**
     * Attempts to get a successful response from `task` no more than `times` times
     * before returning an error. If the task is successful, the `callback` will be
     * passed the result of the successful task. If all attempts fail, the callback
     * will be passed the error and result (if any) of the final attempt.
     *
     * @name retry
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Object|number} [opts = {times: 5, interval: 0}| 5] - Can be either an
     * object with `times` and `interval` or a number.
     * * `times` - The number of attempts to make before giving up.  The default
     *   is `5`.
     * * `interval` - The time to wait between retries, in milliseconds.  The
     *   default is `0`. The interval may also be specified as a function of the
     *   retry count (see example).
     * * If `opts` is a number, the number specifies the number of times to retry,
     *   with the default interval of `0`.
     * @param {Function} task - A function which receives two arguments: (1) a
     * `callback(err, result)` which must be called when finished, passing `err`
     * (which can be `null`) and the `result` of the function's execution, and (2)
     * a `results` object, containing the results of the previously executed
     * functions (if nested inside another control flow). Invoked with
     * (callback, results).
     * @param {Function} [callback] - An optional callback which is called when the
     * task has succeeded, or after the final failed attempt. It receives the `err`
     * and `result` arguments of the last attempt at completing the `task`. Invoked
     * with (err, results).
     * @example
     *
     * // The `retry` function can be used as a stand-alone control flow by passing
     * // a callback, as shown below:
     *
     * // try calling apiMethod 3 times
     * async.retry(3, apiMethod, function(err, result) {
     *     // do something with the result
     * });
     *
     * // try calling apiMethod 3 times, waiting 200 ms between each retry
     * async.retry({times: 3, interval: 200}, apiMethod, function(err, result) {
     *     // do something with the result
     * });
     *
     * // try calling apiMethod 10 times with exponential backoff
     * // (i.e. intervals of 100, 200, 400, 800, 1600, ... milliseconds)
     * async.retry({
     *   times: 10,
     *   interval: function(retryCount) {
     *     return 50 * Math.pow(2, retryCount);
     *   }
     * }, apiMethod, function(err, result) {
     *     // do something with the result
     * });
     *
     * // try calling apiMethod the default 5 times no delay between each retry
     * async.retry(apiMethod, function(err, result) {
     *     // do something with the result
     * });
     *
     * // It can also be embedded within other control flow functions to retry
     * // individual methods that are not as reliable, like this:
     * async.auto({
     *     users: api.getUsers.bind(api),
     *     payments: async.retry(3, api.getPayments.bind(api))
     * }, function(err, results) {
     *     // do something with the results
     * });
     */
    function retry(opts, task, callback) {
        var DEFAULT_TIMES = 5;
        var DEFAULT_INTERVAL = 0;
 
        var options = {
            times: DEFAULT_TIMES,
            intervalFunc: constant$1(DEFAULT_INTERVAL)
        };
 
        function parseTimes(acc, t) {
            if (typeof t === 'object') {
                acc.times = +t.times || DEFAULT_TIMES;
 
                acc.intervalFunc = typeof t.interval === 'function' ? t.interval : constant$1(+t.interval || DEFAULT_INTERVAL);
            } else if (typeof t === 'number' || typeof t === 'string') {
                acc.times = +t || DEFAULT_TIMES;
            } else {
                throw new Error("Invalid arguments for async.retry");
            }
        }
 
        if (arguments.length < 3 && typeof opts === 'function') {
            callback = task || noop;
            task = opts;
        } else {
            parseTimes(options, opts);
            callback = callback || noop;
        }
 
        if (typeof task !== 'function') {
            throw new Error("Invalid arguments for async.retry");
        }
 
        var attempt = 1;
        function retryAttempt() {
            task(function (err) {
                if (err && attempt++ < options.times) {
                    setTimeout(retryAttempt, options.intervalFunc(attempt));
                } else {
                    callback.apply(null, arguments);
                }
            });
        }
 
        retryAttempt();
    }
 
    /**
     * A close relative of [`retry`]{@link module:ControlFlow.retry}.  This method wraps a task and makes it
     * retryable, rather than immediately calling it with retries.
     *
     * @name retryable
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.retry]{@link module:ControlFlow.retry}
     * @category Control Flow
     * @param {Object|number} [opts = {times: 5, interval: 0}| 5] - optional
     * options, exactly the same as from `retry`
     * @param {Function} task - the asynchronous function to wrap
     * @returns {Functions} The wrapped function, which when invoked, will retry on
     * an error, based on the parameters specified in `opts`.
     * @example
     *
     * async.auto({
     *     dep1: async.retryable(3, getFromFlakyService),
     *     process: ["dep1", async.retryable(3, function (results, cb) {
     *         maybeProcessData(results.dep1, cb);
     *     })]
     * }, callback);
     */
    function retryable (opts, task) {
        if (!task) {
            task = opts;
            opts = null;
        }
        return initialParams(function (args, callback) {
            function taskFn(cb) {
                task.apply(null, args.concat([cb]));
            }
 
            if (opts) retry(opts, taskFn, callback);else retry(taskFn, callback);
        });
    }
 
    /**
     * Run the functions in the `tasks` collection in series, each one running once
     * the previous function has completed. If any functions in the series pass an
     * error to its callback, no more functions are run, and `callback` is
     * immediately called with the value of the error. Otherwise, `callback`
     * receives an array of results when `tasks` have completed.
     *
     * It is also possible to use an object instead of an array. Each property will
     * be run as a function, and the results will be passed to the final `callback`
     * as an object instead of an array. This can be a more readable way of handling
     *  results from {@link async.series}.
     *
     * **Note** that while many implementations preserve the order of object
     * properties, the [ECMAScript Language Specification](http://www.ecma-international.org/ecma-262/5.1/#sec-8.6)
     * explicitly states that
     *
     * > The mechanics and order of enumerating the properties is not specified.
     *
     * So if you rely on the order in which your series of functions are executed,
     * and want this to work on all platforms, consider using an array.
     *
     * @name series
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Array|Iterable|Object} tasks - A collection containing functions to run, each
     * function is passed a `callback(err, result)` it must call on completion with
     * an error `err` (which can be `null`) and an optional `result` value.
     * @param {Function} [callback] - An optional callback to run once all the
     * functions have completed. This function gets a results array (or object)
     * containing all the result arguments passed to the `task` callbacks. Invoked
     * with (err, result).
     * @example
     * async.series([
     *     function(callback) {
     *         // do some stuff ...
     *         callback(null, 'one');
     *     },
     *     function(callback) {
     *         // do some more stuff ...
     *         callback(null, 'two');
     *     }
     * ],
     * // optional callback
     * function(err, results) {
     *     // results is now equal to ['one', 'two']
     * });
     *
     * async.series({
     *     one: function(callback) {
     *         setTimeout(function() {
     *             callback(null, 1);
     *         }, 200);
     *     },
     *     two: function(callback){
     *         setTimeout(function() {
     *             callback(null, 2);
     *         }, 100);
     *     }
     * }, function(err, results) {
     *     // results is now equal to: {one: 1, two: 2}
     * });
     */
    function series(tasks, callback) {
      _parallel(eachOfSeries, tasks, callback);
    }
 
    /**
     * Returns `true` if at least one element in the `coll` satisfies an async test.
     * If any iteratee call returns `true`, the main `callback` is immediately
     * called.
     *
     * @name some
     * @static
     * @memberOf module:Collections
     * @method
     * @alias any
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in the array
     * in parallel. The iteratee is passed a `callback(err, truthValue)` which must
     * be called with a boolean argument once it has completed. Invoked with
     * (item, callback).
     * @param {Function} [callback] - A callback which is called as soon as any
     * iteratee returns `true`, or after all the iteratee functions have finished.
     * Result will be either `true` or `false` depending on the values of the async
     * tests. Invoked with (err, result).
     * @example
     *
     * async.some(['file1','file2','file3'], function(filePath, callback) {
     *     fs.access(filePath, function(err) {
     *         callback(null, !err)
     *     });
     * }, function(err, result) {
     *     // if result is true then at least one of the files exists
     * });
     */
    var some = _createTester(eachOf, Boolean, identity);
 
    /**
     * The same as [`some`]{@link module:Collections.some} but runs a maximum of `limit` async operations at a time.
     *
     * @name someLimit
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.some]{@link module:Collections.some}
     * @alias anyLimit
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - A truth test to apply to each item in the array
     * in parallel. The iteratee is passed a `callback(err, truthValue)` which must
     * be called with a boolean argument once it has completed. Invoked with
     * (item, callback).
     * @param {Function} [callback] - A callback which is called as soon as any
     * iteratee returns `true`, or after all the iteratee functions have finished.
     * Result will be either `true` or `false` depending on the values of the async
     * tests. Invoked with (err, result).
     */
    var someLimit = _createTester(eachOfLimit, Boolean, identity);
 
    /**
     * The same as [`some`]{@link module:Collections.some} but runs only a single async operation at a time.
     *
     * @name someSeries
     * @static
     * @memberOf module:Collections
     * @method
     * @see [async.some]{@link module:Collections.some}
     * @alias anySeries
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A truth test to apply to each item in the array
     * in parallel. The iteratee is passed a `callback(err, truthValue)` which must
     * be called with a boolean argument once it has completed. Invoked with
     * (item, callback).
     * @param {Function} [callback] - A callback which is called as soon as any
     * iteratee returns `true`, or after all the iteratee functions have finished.
     * Result will be either `true` or `false` depending on the values of the async
     * tests. Invoked with (err, result).
     */
    var someSeries = doLimit(someLimit, 1);
 
    /**
     * Sorts a list by the results of running each `coll` value through an async
     * `iteratee`.
     *
     * @name sortBy
     * @static
     * @memberOf module:Collections
     * @method
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {Function} iteratee - A function to apply to each item in `coll`.
     * The iteratee is passed a `callback(err, sortValue)` which must be called once
     * it has completed with an error (which can be `null`) and a value to use as
     * the sort criteria. Invoked with (item, callback).
     * @param {Function} callback - A callback which is called after all the
     * `iteratee` functions have finished, or an error occurs. Results is the items
     * from the original `coll` sorted by the values returned by the `iteratee`
     * calls. Invoked with (err, results).
     * @example
     *
     * async.sortBy(['file1','file2','file3'], function(file, callback) {
     *     fs.stat(file, function(err, stats) {
     *         callback(err, stats.mtime);
     *     });
     * }, function(err, results) {
     *     // results is now the original array of files sorted by
     *     // modified date
     * });
     *
     * // By modifying the callback parameter the
     * // sorting order can be influenced:
     *
     * // ascending order
     * async.sortBy([1,9,3,5], function(x, callback) {
     *     callback(null, x);
     * }, function(err,result) {
     *     // result callback
     * });
     *
     * // descending order
     * async.sortBy([1,9,3,5], function(x, callback) {
     *     callback(null, x*-1);    //<- x*-1 instead of x, turns the order around
     * }, function(err,result) {
     *     // result callback
     * });
     */
    function sortBy(coll, iteratee, callback) {
        map(coll, function (x, callback) {
            iteratee(x, function (err, criteria) {
                if (err) return callback(err);
                callback(null, { value: x, criteria: criteria });
            });
        }, function (err, results) {
            if (err) return callback(err);
            callback(null, arrayMap(results.sort(comparator), baseProperty('value')));
        });
 
        function comparator(left, right) {
            var a = left.criteria,
                b = right.criteria;
            return a < b ? -1 : a > b ? 1 : 0;
        }
    }
 
    /**
     * Sets a time limit on an asynchronous function. If the function does not call
     * its callback within the specified milliseconds, it will be called with a
     * timeout error. The code property for the error object will be `'ETIMEDOUT'`.
     *
     * @name timeout
     * @static
     * @memberOf module:Utils
     * @method
     * @category Util
     * @param {Function} asyncFn - The asynchronous function you want to set the
     * time limit.
     * @param {number} milliseconds - The specified time limit.
     * @param {*} [info] - Any variable you want attached (`string`, `object`, etc)
     * to timeout Error for more information..
     * @returns {Function} Returns a wrapped function that can be used with any of
     * the control flow functions.
     * @example
     *
     * async.timeout(function(callback) {
     *     doAsyncTask(callback);
     * }, 1000);
     */
    function timeout(asyncFn, milliseconds, info) {
        var originalCallback, timer;
        var timedOut = false;
 
        function injectedCallback() {
            if (!timedOut) {
                originalCallback.apply(null, arguments);
                clearTimeout(timer);
            }
        }
 
        function timeoutCallback() {
            var name = asyncFn.name || 'anonymous';
            var error = new Error('Callback function "' + name + '" timed out.');
            error.code = 'ETIMEDOUT';
            if (info) {
                error.info = info;
            }
            timedOut = true;
            originalCallback(error);
        }
 
        return initialParams(function (args, origCallback) {
            originalCallback = origCallback;
            // setup timer and call original function
            timer = setTimeout(timeoutCallback, milliseconds);
            asyncFn.apply(null, args.concat(injectedCallback));
        });
    }
 
    /* Built-in method references for those with the same name as other `lodash` methods. */
    var nativeCeil = Math.ceil;
    var nativeMax$1 = Math.max;
    /**
     * The base implementation of `_.range` and `_.rangeRight` which doesn't
     * coerce arguments to numbers.
     *
     * @private
     * @param {number} start The start of the range.
     * @param {number} end The end of the range.
     * @param {number} step The value to increment or decrement by.
     * @param {boolean} [fromRight] Specify iterating from right to left.
     * @returns {Array} Returns the range of numbers.
     */
    function baseRange(start, end, step, fromRight) {
      var index = -1,
          length = nativeMax$1(nativeCeil((end - start) / (step || 1)), 0),
          result = Array(length);
 
      while (length--) {
        result[fromRight ? length : ++index] = start;
        start += step;
      }
      return result;
    }
 
    /**
     * The same as [times]{@link module:ControlFlow.times} but runs a maximum of `limit` async operations at a
     * time.
     *
     * @name timesLimit
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.times]{@link module:ControlFlow.times}
     * @category Control Flow
     * @param {number} count - The number of times to run the function.
     * @param {number} limit - The maximum number of async operations at a time.
     * @param {Function} iteratee - The function to call `n` times. Invoked with the
     * iteration index and a callback (n, next).
     * @param {Function} callback - see [async.map]{@link module:Collections.map}.
     */
    function timeLimit(count, limit, iteratee, callback) {
      mapLimit(baseRange(0, count, 1), limit, iteratee, callback);
    }
 
    /**
     * Calls the `iteratee` function `n` times, and accumulates results in the same
     * manner you would use with [map]{@link module:Collections.map}.
     *
     * @name times
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.map]{@link module:Collections.map}
     * @category Control Flow
     * @param {number} n - The number of times to run the function.
     * @param {Function} iteratee - The function to call `n` times. Invoked with the
     * iteration index and a callback (n, next).
     * @param {Function} callback - see {@link module:Collections.map}.
     * @example
     *
     * // Pretend this is some complicated async factory
     * var createUser = function(id, callback) {
     *     callback(null, {
     *         id: 'user' + id
     *     });
     * };
     *
     * // generate 5 users
     * async.times(5, function(n, next) {
     *     createUser(n, function(err, user) {
     *         next(err, user);
     *     });
     * }, function(err, users) {
     *     // we should now have 5 users
     * });
     */
    var times = doLimit(timeLimit, Infinity);
 
    /**
     * The same as [times]{@link module:ControlFlow.times} but runs only a single async operation at a time.
     *
     * @name timesSeries
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.times]{@link module:ControlFlow.times}
     * @category Control Flow
     * @param {number} n - The number of times to run the function.
     * @param {Function} iteratee - The function to call `n` times. Invoked with the
     * iteration index and a callback (n, next).
     * @param {Function} callback - see {@link module:Collections.map}.
     */
    var timesSeries = doLimit(timeLimit, 1);
 
    /**
     * A relative of `reduce`.  Takes an Object or Array, and iterates over each
     * element in series, each step potentially mutating an `accumulator` value.
     * The type of the accumulator defaults to the type of collection passed in.
     *
     * @name transform
     * @static
     * @memberOf module:Collections
     * @method
     * @category Collection
     * @param {Array|Iterable|Object} coll - A collection to iterate over.
     * @param {*} [accumulator] - The initial state of the transform.  If omitted,
     * it will default to an empty Object or Array, depending on the type of `coll`
     * @param {Function} iteratee - A function applied to each item in the
     * collection that potentially modifies the accumulator. The `iteratee` is
     * passed a `callback(err)` which accepts an optional error as its first
     * argument. If an error is passed to the callback, the transform is stopped
     * and the main `callback` is immediately called with the error.
     * Invoked with (accumulator, item, key, callback).
     * @param {Function} [callback] - A callback which is called after all the
     * `iteratee` functions have finished. Result is the transformed accumulator.
     * Invoked with (err, result).
     * @example
     *
     * async.transform([1,2,3], function(acc, item, index, callback) {
     *     // pointless async:
     *     process.nextTick(function() {
     *         acc.push(item * 2)
     *         callback(null)
     *     });
     * }, function(err, result) {
     *     // result is now equal to [2, 4, 6]
     * });
     *
     * @example
     *
     * async.transform({a: 1, b: 2, c: 3}, function (obj, val, key, callback) {
     *     setImmediate(function () {
     *         obj[key] = val * 2;
     *         callback();
     *     })
     * }, function (err, result) {
     *     // result is equal to {a: 2, b: 4, c: 6}
     * })
     */
    function transform(coll, accumulator, iteratee, callback) {
        if (arguments.length === 3) {
            callback = iteratee;
            iteratee = accumulator;
            accumulator = isArray(coll) ? [] : {};
        }
        callback = once(callback || noop);
 
        eachOf(coll, function (v, k, cb) {
            iteratee(accumulator, v, k, cb);
        }, function (err) {
            callback(err, accumulator);
        });
    }
 
    /**
     * Undoes a [memoize]{@link module:Utils.memoize}d function, reverting it to the original,
     * unmemoized form. Handy for testing.
     *
     * @name unmemoize
     * @static
     * @memberOf module:Utils
     * @method
     * @see [async.memoize]{@link module:Utils.memoize}
     * @category Util
     * @param {Function} fn - the memoized function
     * @returns {Function} a function that calls the original unmemoized function
     */
    function unmemoize(fn) {
        return function () {
            return (fn.unmemoized || fn).apply(null, arguments);
        };
    }
 
    /**
     * Repeatedly call `fn`, while `test` returns `true`. Calls `callback` when
     * stopped, or an error occurs.
     *
     * @name whilst
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Function} test - synchronous truth test to perform before each
     * execution of `fn`. Invoked with ().
     * @param {Function} iteratee - A function which is called each time `test` passes.
     * The function is passed a `callback(err)`, which must be called once it has
     * completed with an optional `err` argument. Invoked with (callback).
     * @param {Function} [callback] - A callback which is called after the test
     * function has failed and repeated execution of `fn` has stopped. `callback`
     * will be passed an error and any arguments passed to the final `fn`'s
     * callback. Invoked with (err, [results]);
     * @returns undefined
     * @example
     *
     * var count = 0;
     * async.whilst(
     *     function() { return count < 5; },
     *     function(callback) {
     *         count++;
     *         setTimeout(function() {
     *             callback(null, count);
     *         }, 1000);
     *     },
     *     function (err, n) {
     *         // 5 seconds have passed, n = 5
     *     }
     * );
     */
    function whilst(test, iteratee, callback) {
        callback = onlyOnce(callback || noop);
        if (!test()) return callback(null);
        var next = rest(function (err, args) {
            if (err) return callback(err);
            if (test()) return iteratee(next);
            callback.apply(null, [null].concat(args));
        });
        iteratee(next);
    }
 
    /**
     * Repeatedly call `fn` until `test` returns `true`. Calls `callback` when
     * stopped, or an error occurs. `callback` will be passed an error and any
     * arguments passed to the final `fn`'s callback.
     *
     * The inverse of [whilst]{@link module:ControlFlow.whilst}.
     *
     * @name until
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @see [async.whilst]{@link module:ControlFlow.whilst}
     * @category Control Flow
     * @param {Function} test - synchronous truth test to perform before each
     * execution of `fn`. Invoked with ().
     * @param {Function} fn - A function which is called each time `test` fails.
     * The function is passed a `callback(err)`, which must be called once it has
     * completed with an optional `err` argument. Invoked with (callback).
     * @param {Function} [callback] - A callback which is called after the test
     * function has passed and repeated execution of `fn` has stopped. `callback`
     * will be passed an error and any arguments passed to the final `fn`'s
     * callback. Invoked with (err, [results]);
     */
    function until(test, fn, callback) {
        whilst(function () {
            return !test.apply(this, arguments);
        }, fn, callback);
    }
 
    /**
     * Runs the `tasks` array of functions in series, each passing their results to
     * the next in the array. However, if any of the `tasks` pass an error to their
     * own callback, the next function is not executed, and the main `callback` is
     * immediately called with the error.
     *
     * @name waterfall
     * @static
     * @memberOf module:ControlFlow
     * @method
     * @category Control Flow
     * @param {Array} tasks - An array of functions to run, each function is passed
     * a `callback(err, result1, result2, ...)` it must call on completion. The
     * first argument is an error (which can be `null`) and any further arguments
     * will be passed as arguments in order to the next task.
     * @param {Function} [callback] - An optional callback to run once all the
     * functions have completed. This will be passed the results of the last task's
     * callback. Invoked with (err, [results]).
     * @returns undefined
     * @example
     *
     * async.waterfall([
     *     function(callback) {
     *         callback(null, 'one', 'two');
     *     },
     *     function(arg1, arg2, callback) {
     *         // arg1 now equals 'one' and arg2 now equals 'two'
     *         callback(null, 'three');
     *     },
     *     function(arg1, callback) {
     *         // arg1 now equals 'three'
     *         callback(null, 'done');
     *     }
     * ], function (err, result) {
     *     // result now equals 'done'
     * });
     *
     * // Or, with named functions:
     * async.waterfall([
     *     myFirstFunction,
     *     mySecondFunction,
     *     myLastFunction,
     * ], function (err, result) {
     *     // result now equals 'done'
     * });
     * function myFirstFunction(callback) {
     *     callback(null, 'one', 'two');
     * }
     * function mySecondFunction(arg1, arg2, callback) {
     *     // arg1 now equals 'one' and arg2 now equals 'two'
     *     callback(null, 'three');
     * }
     * function myLastFunction(arg1, callback) {
     *     // arg1 now equals 'three'
     *     callback(null, 'done');
     * }
     */
    function waterfall (tasks, callback) {
        callback = once(callback || noop);
        if (!isArray(tasks)) return callback(new Error('First argument to waterfall must be an array of functions'));
        if (!tasks.length) return callback();
        var taskIndex = 0;
 
        function nextTask(args) {
            if (taskIndex === tasks.length) {
                return callback.apply(null, [null].concat(args));
            }
 
            var taskCallback = onlyOnce(rest(function (err, args) {
                if (err) {
                    return callback.apply(null, [err].concat(args));
                }
                nextTask(args);
            }));
 
            args.push(taskCallback);
 
            var task = tasks[taskIndex++];
            task.apply(null, args);
        }
 
        nextTask([]);
    }
 
    var index = {
      applyEach: applyEach,
      applyEachSeries: applyEachSeries,
      apply: apply$1,
      asyncify: asyncify,
      auto: auto,
      autoInject: autoInject,
      cargo: cargo,
      compose: compose,
      concat: concat,
      concatSeries: concatSeries,
      constant: constant,
      detect: detect,
      detectLimit: detectLimit,
      detectSeries: detectSeries,
      dir: dir,
      doDuring: doDuring,
      doUntil: doUntil,
      doWhilst: doWhilst,
      during: during,
      each: eachLimit,
      eachLimit: eachLimit$1,
      eachOf: eachOf,
      eachOfLimit: eachOfLimit,
      eachOfSeries: eachOfSeries,
      eachSeries: eachSeries,
      ensureAsync: ensureAsync,
      every: every,
      everyLimit: everyLimit,
      everySeries: everySeries,
      filter: filter,
      filterLimit: filterLimit,
      filterSeries: filterSeries,
      forever: forever,
      log: log,
      map: map,
      mapLimit: mapLimit,
      mapSeries: mapSeries,
      mapValues: mapValues,
      mapValuesLimit: mapValuesLimit,
      mapValuesSeries: mapValuesSeries,
      memoize: memoize,
      nextTick: nextTick,
      parallel: parallelLimit,
      parallelLimit: parallelLimit$1,
      priorityQueue: priorityQueue,
      queue: queue$1,
      race: race,
      reduce: reduce,
      reduceRight: reduceRight,
      reflect: reflect,
      reflectAll: reflectAll,
      reject: reject,
      rejectLimit: rejectLimit,
      rejectSeries: rejectSeries,
      retry: retry,
      retryable: retryable,
      seq: seq,
      series: series,
      setImmediate: setImmediate$1,
      some: some,
      someLimit: someLimit,
      someSeries: someSeries,
      sortBy: sortBy,
      timeout: timeout,
      times: times,
      timesLimit: timeLimit,
      timesSeries: timesSeries,
      transform: transform,
      unmemoize: unmemoize,
      until: until,
      waterfall: waterfall,
      whilst: whilst,
 
      // aliases
      all: every,
      any: some,
      forEach: eachLimit,
      forEachSeries: eachSeries,
      forEachLimit: eachLimit$1,
      forEachOf: eachOf,
      forEachOfSeries: eachOfSeries,
      forEachOfLimit: eachOfLimit,
      inject: reduce,
      foldl: reduce,
      foldr: reduceRight,
      select: filter,
      selectLimit: filterLimit,
      selectSeries: filterSeries,
      wrapSync: asyncify
    };
 
    exports['default'] = index;
    exports.applyEach = applyEach;
    exports.applyEachSeries = applyEachSeries;
    exports.apply = apply$1;
    exports.asyncify = asyncify;
    exports.auto = auto;
    exports.autoInject = autoInject;
    exports.cargo = cargo;
    exports.compose = compose;
    exports.concat = concat;
    exports.concatSeries = concatSeries;
    exports.constant = constant;
    exports.detect = detect;
    exports.detectLimit = detectLimit;
    exports.detectSeries = detectSeries;
    exports.dir = dir;
    exports.doDuring = doDuring;
    exports.doUntil = doUntil;
    exports.doWhilst = doWhilst;
    exports.during = during;
    exports.each = eachLimit;
    exports.eachLimit = eachLimit$1;
    exports.eachOf = eachOf;
    exports.eachOfLimit = eachOfLimit;
    exports.eachOfSeries = eachOfSeries;
    exports.eachSeries = eachSeries;
    exports.ensureAsync = ensureAsync;
    exports.every = every;
    exports.everyLimit = everyLimit;
    exports.everySeries = everySeries;
    exports.filter = filter;
    exports.filterLimit = filterLimit;
    exports.filterSeries = filterSeries;
    exports.forever = forever;
    exports.log = log;
    exports.map = map;
    exports.mapLimit = mapLimit;
    exports.mapSeries = mapSeries;
    exports.mapValues = mapValues;
    exports.mapValuesLimit = mapValuesLimit;
    exports.mapValuesSeries = mapValuesSeries;
    exports.memoize = memoize;
    exports.nextTick = nextTick;
    exports.parallel = parallelLimit;
    exports.parallelLimit = parallelLimit$1;
    exports.priorityQueue = priorityQueue;
    exports.queue = queue$1;
    exports.race = race;
    exports.reduce = reduce;
    exports.reduceRight = reduceRight;
    exports.reflect = reflect;
    exports.reflectAll = reflectAll;
    exports.reject = reject;
    exports.rejectLimit = rejectLimit;
    exports.rejectSeries = rejectSeries;
    exports.retry = retry;
    exports.retryable = retryable;
    exports.seq = seq;
    exports.series = series;
    exports.setImmediate = setImmediate$1;
    exports.some = some;
    exports.someLimit = someLimit;
    exports.someSeries = someSeries;
    exports.sortBy = sortBy;
    exports.timeout = timeout;
    exports.times = times;
    exports.timesLimit = timeLimit;
    exports.timesSeries = timesSeries;
    exports.transform = transform;
    exports.unmemoize = unmemoize;
    exports.until = until;
    exports.waterfall = waterfall;
    exports.whilst = whilst;
    exports.all = every;
    exports.allLimit = everyLimit;
    exports.allSeries = everySeries;
    exports.any = some;
    exports.anyLimit = someLimit;
    exports.anySeries = someSeries;
    exports.find = detect;
    exports.findLimit = detectLimit;
    exports.findSeries = detectSeries;
    exports.forEach = eachLimit;
    exports.forEachSeries = eachSeries;
    exports.forEachLimit = eachLimit$1;
    exports.forEachOf = eachOf;
    exports.forEachOfSeries = eachOfSeries;
    exports.forEachOfLimit = eachOfLimit;
    exports.inject = reduce;
    exports.foldl = reduce;
    exports.foldr = reduceRight;
    exports.select = filter;
    exports.selectLimit = filterLimit;
    exports.selectSeries = filterSeries;
    exports.wrapSync = asyncify;
 
}));